10020111220 has 48 divisors (see below), whose sum is σ = 24059508480. Its totient is φ = 3433860864.

The previous prime is 10020111203. The next prime is 10020111223. The reversal of 10020111220 is 2211102001.

It is a super-2 number, since 2×10020111220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 10020111197 and 10020111206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10020111223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306001 + ... + 337159.

It is an arithmetic number, because the mean of its divisors is an integer number (501239760).

Almost surely, 2^10020111220 is an apocalyptic number.

10020111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10020111220 is an abundant number, since it is smaller than the sum of its proper divisors (14039397260).

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

10020111220 is a wasteful number, since it uses less digits than its factorization.

10020111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33472 (or 33470 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10020111220 its reverse (2211102001), we get a palindrome (12231213221).

The spelling of 10020111220 in words is "ten billion, twenty million, one hundred eleven thousand, two hundred twenty".