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10122101001 = 323643308723
BaseRepresentation
bin10010110110101001…
…10000000100001001
3222010102112000012200
421123110300010021
5131212224213001
64352223430413
7505556303355
oct113324600411
928112460180
1010122101001
114324731331
121b65a55409
13c5409b79c
146c0468465
153e397b086
hex25b530109

10122101001 has 12 divisors (see below), whose sum is σ = 14624873328. Its totient is φ = 6746193144.

The previous prime is 10122100969. The next prime is 10122101039. The reversal of 10122101001 is 10010122101.

It is a happy number.

It is not a de Polignac number, because 10122101001 - 25 = 10122100969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10122101071) 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 11 ways as a sum of consecutive naturals, for example, 121575 + ... + 187148.

It is an arithmetic number, because the mean of its divisors is an integer number (1218739444).

Almost surely, 210122101001 is an apocalyptic number.

It is an amenable number.

10122101001 is a deficient number, since it is larger than the sum of its proper divisors (4502772327).

10122101001 is a wasteful number, since it uses less digits than its factorization.

10122101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312372 (or 312369 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10122101001 its reverse (10010122101), we get a palindrome (20132223102).

The spelling of 10122101001 in words is "ten billion, one hundred twenty-two million, one hundred one thousand, one".

Divisors: 1 3 9 3643 10929 32787 308723 926169 2778507 1124677889 3374033667 10122101001