101031012020 has 12 divisors (see below), whose sum is σ = 212165125284. Its totient is φ = 40412404800.

The previous prime is 101031011999. The next prime is 101031012073. The reversal of 101031012020 is 20210130101.

It can be written as a sum of positive squares in 2 ways, for example, as 25961587876 + 75069424144 = 161126^2 + 273988^2 .

It is a junction number, because it is equal to n+sod(n) for n = 101031011992 and 101031012010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2525775281 + ... + 2525775320.

It is an arithmetic number, because the mean of its divisors is an integer number (17680427107).

Almost surely, 2^101031012020 is an apocalyptic number.

101031012020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101031012020 is an abundant number, since it is smaller than the sum of its proper divisors (111134113264).

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

101031012020 is a wasteful number, since it uses less digits than its factorization.

101031012020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5051550610 (or 5051550608 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 101031012020 its reverse (20210130101), we get a palindrome (121241142121).

The spelling of 101031012020 in words is "one hundred one billion, thirty-one million, twelve thousand, twenty".