20210000220 has 72 divisors (see below), whose sum is σ = 61786443264. Its totient is φ = 5346891648.

The previous prime is 20210000207. The next prime is 20210000267. The reversal of 20210000220 is 2200001202.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 419179 + ... + 464898.

Almost surely, 2^20210000220 is an apocalyptic number.

20210000220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20210000220 is an abundant number, since it is smaller than the sum of its proper divisors (41576443044).

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

20210000220 is a wasteful number, since it uses less digits than its factorization.

20210000220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 884219 (or 884214 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

Adding to 20210000220 its reverse (2200001202), we get a palindrome (22410001422).

The spelling of 20210000220 in words is "twenty billion, two hundred ten million, two hundred twenty", and thus it is an aban number.