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3020101221 = 31787767523
BaseRepresentation
bin1011010000000011…
…0001011001100101
321210110212001000210
42310000301121211
522141121214341
61215403130033
7134561302554
oct26400613145
97713761023
103020101221
11130a84a825
12703513919
13391901a57
14209159d9b
1512a214c16
hexb4031665

3020101221 has 16 divisors (see below), whose sum is σ = 4268597184. Its totient is φ = 1892776704.

The previous prime is 3020101207. The next prime is 3020101223. The reversal of 3020101221 is 1221010203.

It is not a de Polignac number, because 3020101221 - 26 = 3020101157 is a prime.

It is a super-2 number, since 2×30201012212 = 18242022770171381682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3020101197 and 3020101206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3020101223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10966 + ... + 78488.

It is an arithmetic number, because the mean of its divisors is an integer number (266787324).

Almost surely, 23020101221 is an apocalyptic number.

It is an amenable number.

3020101221 is a deficient number, since it is larger than the sum of its proper divisors (1248495963).

3020101221 is a wasteful number, since it uses less digits than its factorization.

3020101221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68420.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 3020101221 is about 54955.4476007611. The cubic root of 3020101221 is about 1445.4636221807.

Adding to 3020101221 its reverse (1221010203), we get a palindrome (4241111424).

The spelling of 3020101221 in words is "three billion, twenty million, one hundred one thousand, two hundred twenty-one".

Divisors: 1 3 17 51 877 2631 14909 44727 67523 202569 1147891 3443673 59217671 177653013 1006700407 3020101221