20400600212 has 24 divisors (see below), whose sum is σ = 36391202400. Its totient is φ = 10004882976.

The previous prime is 20400600211. The next prime is 20400600239. The reversal of 20400600212 is 21200600402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20400600211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174887 + ... + 267182.

It is an arithmetic number, because the mean of its divisors is an integer number (1516300100).

Almost surely, 2^20400600212 is an apocalyptic number.

It is an amenable number.

20400600212 is a deficient number, since it is larger than the sum of its proper divisors (15990602188).

20400600212 is a wasteful number, since it uses less digits than its factorization.

20400600212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442295 (or 442293 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The spelling of 20400600212 in words is "twenty billion, four hundred million, six hundred thousand, two hundred twelve".