2012112202221 has 72 divisors (see below), whose sum is σ = 3315745087200. Its totient is φ = 1165985029440.

The previous prime is 2012112202189. The next prime is 2012112202249. The reversal of 2012112202221 is 1222022112102.

It is a happy number.

2012112202221 is a `hidden beast` number, since 201 + 21 + 1 + 220 + 2 + 221 = 666.

It is not a de Polignac number, because 2012112202221 - 2⁵ = 2012112202189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012112202194 and 2012112202203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012112202271) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 170671195 + ... + 170682983.

It is an arithmetic number, because the mean of its divisors is an integer number (46052015100).

Almost surely, 2^{2012112202221} is an apocalyptic number.

It is an amenable number.

2012112202221 is a deficient number, since it is larger than the sum of its proper divisors (1303632884979).

2012112202221 is a wasteful number, since it uses less digits than its factorization.

2012112202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15111 (or 15085 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 2012112202221 its reverse (1222022112102), we get a palindrome (3234134314323).

The spelling of 2012112202221 in words is "two trillion, twelve billion, one hundred twelve million, two hundred two thousand, two hundred twenty-one".