10131220012 has 24 divisors (see below), whose sum is σ = 17901765056. Its totient is φ = 5016651408.

The previous prime is 10131219997. The next prime is 10131220097. The reversal of 10131220012 is 21002213101.

It is a junction number, because it is equal to n+sod(n) for n = 10131219974 and 10131220001.

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, 157063 + ... + 211969.

Almost surely, 2^10131220012 is an apocalyptic number.

It is an amenable number.

10131220012 is a deficient number, since it is larger than the sum of its proper divisors (7770545044).

10131220012 is a wasteful number, since it uses less digits than its factorization.

10131220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55357 (or 55355 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10131220012 its reverse (21002213101), we get a palindrome (31133433113).

It can be divided in two parts, 1013 and 1220012, that added together give a square (1221025 = 1105²).

The spelling of 10131220012 in words is "ten billion, one hundred thirty-one million, two hundred twenty thousand, twelve".