20121011212 has 12 divisors (see below), whose sum is σ = 35213428936. Its totient is φ = 10060031520.

The previous prime is 20121011201. The next prime is 20121011221. The reversal of 20121011212 is 21211012102.

It is a junction number, because it is equal to n+sod(n) for n = 20121011192 and 20121011201.

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, 12489 + ... + 200992.

Almost surely, 2^20121011212 is an apocalyptic number.

It is an amenable number.

20121011212 is a deficient number, since it is larger than the sum of its proper divisors (15092417724).

20121011212 is a wasteful number, since it uses less digits than its factorization.

20121011212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237048 (or 237046 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20121011212 its reverse (21211012102), we get a palindrome (41332023314).

The spelling of 20121011212 in words is "twenty billion, one hundred twenty-one million, eleven thousand, two hundred twelve".