10200122121 has 32 divisors (see below), whose sum is σ = 16155417600. Its totient is φ = 5600911680.

The previous prime is 10200122113. The next prime is 10200122131. The reversal of 10200122121 is 12122100201.

It is not a de Polignac number, because 10200122121 - 2³ = 10200122113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10200122097 and 10200122106.

It is not an unprimeable number, because it can be changed into a prime (10200122131) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88810 + ... + 168188.

It is an arithmetic number, because the mean of its divisors is an integer number (504856800).

Almost surely, 2^10200122121 is an apocalyptic number.

It is an amenable number.

10200122121 is a deficient number, since it is larger than the sum of its proper divisors (5955295479).

10200122121 is a wasteful number, since it uses less digits than its factorization.

10200122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79629.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10200122121 its reverse (12122100201), we get a palindrome (22322222322).

The spelling of 10200122121 in words is "ten billion, two hundred million, one hundred twenty-two thousand, one hundred twenty-one".