20200111220 has 12 divisors (see below), whose sum is σ = 42420233604. Its totient is φ = 8080044480.

The previous prime is 20200111181. The next prime is 20200111223. The reversal of 20200111220 is 2211100202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7144306576 + 13055804644 = 84524^2 + 114262^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200111223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 505002761 + ... + 505002800.

It is an arithmetic number, because the mean of its divisors is an integer number (3535019467).

Almost surely, 2^20200111220 is an apocalyptic number.

20200111220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200111220 is an abundant number, since it is smaller than the sum of its proper divisors (22220122384).

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

20200111220 is a wasteful number, since it uses less digits than its factorization.

20200111220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1010005570 (or 1010005568 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 20200111220 its reverse (2211100202), we get a palindrome (22411211422).

The spelling of 20200111220 in words is "twenty billion, two hundred million, one hundred eleven thousand, two hundred twenty".