20134123212 has 48 divisors (see below), whose sum is σ = 53699288832. Its totient is φ = 5751718080.

The previous prime is 20134123159. The next prime is 20134123253. The reversal of 20134123212 is 21232143102.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 688162 + ... + 716822.

It is an arithmetic number, because the mean of its divisors is an integer number (1118735184).

Almost surely, 2^20134123212 is an apocalyptic number.

It is an amenable number.

20134123212 is an abundant number, since it is smaller than the sum of its proper divisors (33565165620).

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

20134123212 is a wasteful number, since it uses less digits than its factorization.

20134123212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37038 (or 37036 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 20134123212 its reverse (21232143102), we get a palindrome (41366266314).

The spelling of 20134123212 in words is "twenty billion, one hundred thirty-four million, one hundred twenty-three thousand, two hundred twelve".