101202020121 has 16 divisors (see below), whose sum is σ = 138592232000. Its totient is φ = 65640155328.

The previous prime is 101202020069. The next prime is 101202020141. The reversal of 101202020121 is 121020202101.

It is not a de Polignac number, because 101202020121 - 2¹⁹ = 101201495833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 101202020097 and 101202020106.

It is not an unprimeable number, because it can be changed into a prime (101202020141) 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, 2861655 + ... + 2896803.

It is an arithmetic number, because the mean of its divisors is an integer number (8662014500).

Almost surely, 2^101202020121 is an apocalyptic number.

It is an amenable number.

101202020121 is a deficient number, since it is larger than the sum of its proper divisors (37390211879).

101202020121 is a wasteful number, since it uses less digits than its factorization.

101202020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61128.

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

Adding to 101202020121 its reverse (121020202101), we get a palindrome (222222222222).

The spelling of 101202020121 in words is "one hundred one billion, two hundred two million, twenty thousand, one hundred twenty-one".