101031220212 has 24 divisors (see below), whose sum is σ = 253873322976. Its totient is φ = 31086529248.

The previous prime is 101031220111. The next prime is 101031220237. The reversal of 101031220212 is 212022130101.

It is a junction number, because it is equal to n+sod(n) for n = 101031220191 and 101031220200.

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, 323817858 + ... + 323818169.

It is an arithmetic number, because the mean of its divisors is an integer number (10578055124).

Almost surely, 2^101031220212 is an apocalyptic number.

101031220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

101031220212 is an abundant number, since it is smaller than the sum of its proper divisors (152842102764).

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

101031220212 is a wasteful number, since it uses less digits than its factorization.

101031220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647636047 (or 647636045 counting only the distinct ones).

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

Adding to 101031220212 its reverse (212022130101), we get a palindrome (313053350313).

The spelling of 101031220212 in words is "one hundred one billion, thirty-one million, two hundred twenty thousand, two hundred twelve".