102012211021121 has 16 divisors (see below), whose sum is σ = 103276417062336. Its totient is φ = 100748848406976.

The previous prime is 102012211020943. The next prime is 102012211021139. The reversal of 102012211021121 is 121120112210201.

It is a de Polignac number, because none of the positive numbers 2^k-102012211021121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102012211021121.

It is not an unprimeable number, because it can be changed into a prime (102012211021141) 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, 3793249151 + ... + 3793276043.

It is an arithmetic number, because the mean of its divisors is an integer number (6454776066396).

Almost surely, 2^{102012211021121} is an apocalyptic number.

It is an amenable number.

102012211021121 is a deficient number, since it is larger than the sum of its proper divisors (1264206041215).

102012211021121 is an equidigital number, since it uses as much as digits as its factorization.

102012211021121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40832.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102012211021121 its reverse (121120112210201), we get a palindrome (223132323231322).

The spelling of 102012211021121 in words is "one hundred two trillion, twelve billion, two hundred eleven million, twenty-one thousand, one hundred twenty-one".