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10030222021 = 45492204929
BaseRepresentation
bin10010101011101100…
…10000101011000101
3221220000122001221111
421111312100223011
5131020214101041
64335142245021
7503362323541
oct112566205305
927800561844
1010030222021
114287887296
121b3b126771
13c3b03c521
146b218ca21
153da87c981
hex255d90ac5

10030222021 has 4 divisors (see below), whose sum is σ = 10032431500. Its totient is φ = 10028012544.

The previous prime is 10030221937. The next prime is 10030222039. The reversal of 10030222021 is 12022203001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3447333796 + 6582888225 = 58714^2 + 81135^2 .

It is a cyclic number.

It is not a de Polignac number, because 10030222021 - 27 = 10030221893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10030221992 and 10030222010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10030222121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1097916 + ... + 1107013.

It is an arithmetic number, because the mean of its divisors is an integer number (2508107875).

Almost surely, 210030222021 is an apocalyptic number.

It is an amenable number.

10030222021 is a deficient number, since it is larger than the sum of its proper divisors (2209479).

10030222021 is an equidigital number, since it uses as much as digits as its factorization.

10030222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2209478.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 10030222021 its reverse (12022203001), we get a palindrome (22052425022).

The spelling of 10030222021 in words is "ten billion, thirty million, two hundred twenty-two thousand, twenty-one".

Divisors: 1 4549 2204929 10030222021