20011222222012 has 24 divisors (see below), whose sum is σ = 40777584908256. Its totient is φ = 8414422281408.

The previous prime is 20011222221961. The next prime is 20011222222049. The reversal of 20011222222012 is 21022222211002.

It is a congruent 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, 6742324063 + ... + 6742327030.

It is an arithmetic number, because the mean of its divisors is an integer number (1699066037844).

Almost surely, 2^{20011222222012} is an apocalyptic number.

It is an amenable number.

20011222222012 is an abundant number, since it is smaller than the sum of its proper divisors (20766362686244).

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

20011222222012 is a wasteful number, since it uses less digits than its factorization.

20011222222012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13484651157 (or 13484651155 counting only the distinct ones).

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

Adding to 20011222222012 its reverse (21022222211002), we get a palindrome (41033444433014).

The spelling of 20011222222012 in words is "twenty trillion, eleven billion, two hundred twenty-two million, two hundred twenty-two thousand, twelve".