10211220012 has 24 divisors (see below), whose sum is σ = 27229920256. Its totient is φ = 2917491408.

The previous prime is 10211219999. The next prime is 10211220031. The reversal of 10211220012 is 21002211201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a self number, because there is not a number n which added to its sum of digits gives 10211220012.

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, 60780988 + ... + 60781155.

Almost surely, 2^10211220012 is an apocalyptic number.

10211220012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10211220012 is an abundant number, since it is smaller than the sum of its proper divisors (17018700244).

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

10211220012 is a wasteful number, since it uses less digits than its factorization.

10211220012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121562157 (or 121562155 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 10211220012 its reverse (21002211201), we get a palindrome (31213431213).

The spelling of 10211220012 in words is "ten billion, two hundred eleven million, two hundred twenty thousand, twelve".