20156002212 has 24 divisors (see below), whose sum is σ = 47165440000. Its totient is φ = 6699414816.

The previous prime is 20156002177. The next prime is 20156002241. The reversal of 20156002212 is 21220065102.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2402212 + ... + 2410587.

Almost surely, 2^20156002212 is an apocalyptic number.

It is an amenable number.

20156002212 is an abundant number, since it is smaller than the sum of its proper divisors (27009437788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20156002212 is a wasteful number, since it uses less digits than its factorization.

20156002212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4813155 (or 4813153 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 21.

Adding to 20156002212 its reverse (21220065102), we get a palindrome (41376067314).

The spelling of 20156002212 in words is "twenty billion, one hundred fifty-six million, two thousand, two hundred twelve".