20212912124 has 6 divisors (see below), whose sum is σ = 35372596224. Its totient is φ = 10106456060.

The previous prime is 20212912121. The next prime is 20212912171. The reversal of 20212912124 is 42121921202.

It is a junction number, because it is equal to n+sod(n) for n = 20212912093 and 20212912102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212912121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2526614012 + ... + 2526614019.

It is an arithmetic number, because the mean of its divisors is an integer number (5895432704).

Almost surely, 2^20212912124 is an apocalyptic number.

It is an amenable number.

20212912124 is a deficient number, since it is larger than the sum of its proper divisors (15159684100).

20212912124 is a wasteful number, since it uses less digits than its factorization.

20212912124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5053228035 (or 5053228033 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The spelling of 20212912124 in words is "twenty billion, two hundred twelve million, nine hundred twelve thousand, one hundred twenty-four".