20120122012 has 6 divisors (see below), whose sum is σ = 35210213528. Its totient is φ = 10060061004.

The previous prime is 20120121949. The next prime is 20120122021. The reversal of 20120122012 is 21022102102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20120121983 and 20120122001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2515015248 + ... + 2515015255.

Almost surely, 2^20120122012 is an apocalyptic number.

It is an amenable number.

20120122012 is a deficient number, since it is larger than the sum of its proper divisors (15090091516).

20120122012 is a wasteful number, since it uses less digits than its factorization.

20120122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5030030507 (or 5030030505 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20120122012 its reverse (21022102102), we get a palindrome (41142224114).

The spelling of 20120122012 in words is "twenty billion, one hundred twenty million, one hundred twenty-two thousand, twelve".