102121221202 has 128 divisors (see below), whose sum is σ = 213501689856. Its totient is φ = 35341920000.

The previous prime is 102121221161. The next prime is 102121221229. The reversal of 102121221202 is 202122121201.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 11228677 + ... + 11237767.

It is an arithmetic number, because the mean of its divisors is an integer number (1667981952).

Almost surely, 2^102121221202 is an apocalyptic number.

102121221202 is an abundant number, since it is smaller than the sum of its proper divisors (111380468654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

102121221202 is a wasteful number, since it uses less digits than its factorization.

102121221202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9336.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 102121221202 its reverse (202122121201), we get a palindrome (304243342403).

It can be divided in two parts, 102121 and 221202, that added together give a palindrome (323323).

The spelling of 102121221202 in words is "one hundred two billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred two".