102000020122221 has 32 divisors (see below), whose sum is σ = 148478682078720. Its totient is φ = 61907342126784.

The previous prime is 102000020122199. The next prime is 102000020122223. The reversal of 102000020122221 is 122221020000201.

It is not a de Polignac number, because 102000020122221 - 2¹³ = 102000020114029 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102000020122221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102000020122223) 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, 24940311 + ... + 28740548.

It is an arithmetic number, because the mean of its divisors is an integer number (4639958814960).

Almost surely, 2^{102000020122221} is an apocalyptic number.

It is an amenable number.

102000020122221 is a deficient number, since it is larger than the sum of its proper divisors (46478661956499).

102000020122221 is a wasteful number, since it uses less digits than its factorization.

102000020122221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53681545.

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

Adding to 102000020122221 its reverse (122221020000201), we get a palindrome (224221040122422).

The spelling of 102000020122221 in words is "one hundred two trillion, twenty million, one hundred twenty-two thousand, two hundred twenty-one".