102203012121 has 32 divisors (see below), whose sum is σ = 156872971008. Its totient is φ = 57977579520.

The previous prime is 102203012099. The next prime is 102203012159. The reversal of 102203012121 is 121210302201.

It is not a de Polignac number, because 102203012121 - 2¹⁷ = 102202881049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102203012121.

It is not an unprimeable number, because it can be changed into a prime (102203016121) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 1617951 + ... + 1679931.

It is an arithmetic number, because the mean of its divisors is an integer number (4902280344).

Almost surely, 2^102203012121 is an apocalyptic number.

It is an amenable number.

102203012121 is a deficient number, since it is larger than the sum of its proper divisors (54669958887).

102203012121 is a wasteful number, since it uses less digits than its factorization.

102203012121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62561.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 102203012121 its reverse (121210302201), we get a palindrome (223413314322).

The spelling of 102203012121 in words is "one hundred two billion, two hundred three million, twelve thousand, one hundred twenty-one".