20011103312 has 10 divisors (see below), whose sum is σ = 38771512698. Its totient is φ = 10005551648.

The previous prime is 20011103309. The next prime is 20011103339. The reversal of 20011103312 is 21330111002.

It can be written as a sum of positive squares in only one way, i.e., 19164526096 + 846577216 = 138436^2 + 29096^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 625346963 + ... + 625346994.

Almost surely, 2^20011103312 is an apocalyptic number.

It is an amenable number.

20011103312 is a deficient number, since it is larger than the sum of its proper divisors (18760409386).

20011103312 is a wasteful number, since it uses less digits than its factorization.

20011103312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1250693965 (or 1250693959 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 20011103312 its reverse (21330111002), we get a palindrome (41341214314).

The spelling of 20011103312 in words is "twenty billion, eleven million, one hundred three thousand, three hundred twelve".