20012122211212 has 12 divisors (see below), whose sum is σ = 35022017911216. Its totient is φ = 10005831379440.

The previous prime is 20012122211201. The next prime is 20012122211231. The reversal of 20012122211212 is 21211222121002.

It is a self number, because there is not a number n which added to its sum of digits gives 20012122211212.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57235464 + ... + 57584047.

Almost surely, 2^{20012122211212} is an apocalyptic number.

It is an amenable number.

20012122211212 is a deficient number, since it is larger than the sum of its proper divisors (15009895700004).

20012122211212 is a wasteful number, since it uses less digits than its factorization.

20012122211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114863088 (or 114863086 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 20012122211212 its reverse (21211222121002), we get a palindrome (41223344332214).

The spelling of 20012122211212 in words is "twenty trillion, twelve billion, one hundred twenty-two million, two hundred eleven thousand, two hundred twelve".