2012102222221 has 128 divisors (see below), whose sum is σ = 2724212736000. Its totient is φ = 1449984436992.

The previous prime is 2012102222209. The next prime is 2012102222227. The reversal of 2012102222221 is 1222222012102.

It is not a de Polignac number, because 2012102222221 - 2³⁹ = 1462346408333 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012102222227) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3109894920 + ... + 3109895566.

It is an arithmetic number, because the mean of its divisors is an integer number (21282912000).

Almost surely, 2^{2012102222221} is an apocalyptic number.

It is an amenable number.

2012102222221 is a deficient number, since it is larger than the sum of its proper divisors (712110513779).

2012102222221 is a wasteful number, since it uses less digits than its factorization.

2012102222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1108 (or 1082 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2012102222221 its reverse (1222222012102), we get a palindrome (3234324234323).

The spelling of 2012102222221 in words is "two trillion, twelve billion, one hundred two million, two hundred twenty-two thousand, two hundred twenty-one".