101202122121 has 16 divisors (see below), whose sum is σ = 140003385600. Its totient is φ = 64948278528.

The previous prime is 101202122117. The next prime is 101202122129. The reversal of 101202122121 is 121221202101.

It is not a de Polignac number, because 101202122121 - 2² = 101202122117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101202122121.

It is not an unprimeable number, because it can be changed into a prime (101202122129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1696561 + ... + 1755198.

It is an arithmetic number, because the mean of its divisors is an integer number (8750211600).

Almost surely, 2^101202122121 is an apocalyptic number.

It is an amenable number.

101202122121 is a deficient number, since it is larger than the sum of its proper divisors (38801263479).

101202122121 is a wasteful number, since it uses less digits than its factorization.

101202122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3452128.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 101202122121 its reverse (121221202101), we get a palindrome (222423324222).

The spelling of 101202122121 in words is "one hundred one billion, two hundred two million, one hundred twenty-two thousand, one hundred twenty-one".