10311220212 has 24 divisors (see below), whose sum is σ = 24162780096. Its totient is φ = 3422321088.

The previous prime is 10311220201. The next prime is 10311220243. The reversal of 10311220212 is 21202211301.

It is a junction number, because it is equal to n+sod(n) for n = 10311220191 and 10311220200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1841128 + ... + 1846719.

It is an arithmetic number, because the mean of its divisors is an integer number (1006782504).

Almost surely, 2^10311220212 is an apocalyptic number.

10311220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

10311220212 is an abundant number, since it is smaller than the sum of its proper divisors (13851559884).

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

10311220212 is a wasteful number, since it uses less digits than its factorization.

10311220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3688087 (or 3688085 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10311220212 its reverse (21202211301), we get a palindrome (31513431513).

The spelling of 10311220212 in words is "ten billion, three hundred eleven million, two hundred twenty thousand, two hundred twelve".