10200111220 has 24 divisors (see below), whose sum is σ = 23067944424. Its totient is φ = 3766194816.

The previous prime is 10200111211. The next prime is 10200111239. The reversal of 10200111220 is 2211100201.

It can be written as a sum of positive squares in 4 ways, for example, as 125171344 + 10074939876 = 11188^2 + 100374^2 .

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 = 10200111197 and 10200111206.

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, 19615339 + ... + 19615858.

It is an arithmetic number, because the mean of its divisors is an integer number (961164351).

Almost surely, 2^10200111220 is an apocalyptic number.

10200111220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10200111220 is an abundant number, since it is smaller than the sum of its proper divisors (12867833204).

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

10200111220 is a wasteful number, since it uses less digits than its factorization.

10200111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39231219 (or 39231217 counting only the distinct ones).

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

Adding to 10200111220 its reverse (2211100201), we get a palindrome (12411211421).

The spelling of 10200111220 in words is "ten billion, two hundred million, one hundred eleven thousand, two hundred twenty".