102012100120221 has 16 divisors (see below), whose sum is σ = 139875809379648. Its totient is φ = 66083059440000.

The previous prime is 102012100120111. The next prime is 102012100120297. The reversal of 102012100120221 is 122021001210201.

It is not a de Polignac number, because 102012100120221 - 2⁷ = 102012100120093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102012100120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102012100170221) 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, 603744655 + ... + 603913596.

It is an arithmetic number, because the mean of its divisors is an integer number (8742238086228).

Almost surely, 2^{102012100120221} is an apocalyptic number.

It is an amenable number.

102012100120221 is a deficient number, since it is larger than the sum of its proper divisors (37863709259427).

102012100120221 is a wasteful number, since it uses less digits than its factorization.

102012100120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1207659052.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 102012100120221 its reverse (122021001210201), we get a palindrome (224033101330422).

The spelling of 102012100120221 in words is "one hundred two trillion, twelve billion, one hundred million, one hundred twenty thousand, two hundred twenty-one".