10031012220 has 24 divisors (see below), whose sum is σ = 28086834384. Its totient is φ = 2674936576.

The previous prime is 10031012219. The next prime is 10031012221. The reversal of 10031012220 is 2221013001.

It is an interprime number because it is at equal distance from previous prime (10031012219) and next prime (10031012221).

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

It is a junction number, because it is equal to n+sod(n) for n = 10031012196 and 10031012205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10031012221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83591709 + ... + 83591828.

It is an arithmetic number, because the mean of its divisors is an integer number (1170284766).

Almost surely, 2^10031012220 is an apocalyptic number.

10031012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10031012220 is an abundant number, since it is smaller than the sum of its proper divisors (18055822164).

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

10031012220 is a wasteful number, since it uses less digits than its factorization.

10031012220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167183549 (or 167183547 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 10031012220 its reverse (2221013001), we get a palindrome (12252025221).

The spelling of 10031012220 in words is "ten billion, thirty-one million, twelve thousand, two hundred twenty".