102220220121 has 16 divisors (see below), whose sum is σ = 137444505600. Its totient is φ = 67571981568.

The previous prime is 102220220119. The next prime is 102220220279. The reversal of 102220220121 is 121022022201.

It is not a de Polignac number, because 102220220121 - 2¹ = 102220220119 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102220220121.

It is not an unprimeable number, because it can be changed into a prime (102220220621) 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, 606625 + ... + 756593.

It is an arithmetic number, because the mean of its divisors is an integer number (8590281600).

Almost surely, 2^102220220121 is an apocalyptic number.

It is an amenable number.

102220220121 is a deficient number, since it is larger than the sum of its proper divisors (35224285479).

102220220121 is a wasteful number, since it uses less digits than its factorization.

102220220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151888.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 102220220121 its reverse (121022022201), we get a palindrome (223242242322).

The spelling of 102220220121 in words is "one hundred two billion, two hundred twenty million, two hundred twenty thousand, one hundred twenty-one".