20401124312 has 32 divisors (see below), whose sum is σ = 41188726800. Its totient is φ = 9437804544.

The previous prime is 20401124281. The next prime is 20401124339. The reversal of 20401124312 is 21342110402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1263233 + ... + 1279280.

Almost surely, 2^20401124312 is an apocalyptic number.

It is an amenable number.

20401124312 is an abundant number, since it is smaller than the sum of its proper divisors (20787602488).

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

20401124312 is a wasteful number, since it uses less digits than its factorization.

20401124312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2542595 (or 2542591 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 20401124312 its reverse (21342110402), we get a palindrome (41743234714).

The spelling of 20401124312 in words is "twenty billion, four hundred one million, one hundred twenty-four thousand, three hundred twelve".