20110121011212 has 36 divisors (see below), whose sum is σ = 49052475399480. Its totient is φ = 6411922639232.

The previous prime is 20110121011207. The next prime is 20110121011289. The reversal of 20110121011212 is 21211012101102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20110121011191 and 20110121011200.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1583966637 + ... + 1583979332.

Almost surely, 2^{20110121011212} is an apocalyptic number.

It is an amenable number.

20110121011212 is an abundant number, since it is smaller than the sum of its proper divisors (28942354388268).

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

20110121011212 is a wasteful number, since it uses less digits than its factorization.

20110121011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3167946022 (or 3167945997 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 20110121011212 its reverse (21211012101102), we get a palindrome (41321133112314).

The spelling of 20110121011212 in words is "twenty trillion, one hundred ten billion, one hundred twenty-one million, eleven thousand, two hundred twelve".