220200121000 has 64 divisors (see below), whose sum is σ = 515354046480. Its totient is φ = 88065388800.

The previous prime is 220200120991. The next prime is 220200121079. The reversal of 220200121000 is 121002022.

It can be written as a sum of positive squares in 8 ways, for example, as 93889539396 + 126310581604 = 306414^2 + 355402^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7558462 + ... + 7587538.

Almost surely, 2^220200121000 is an apocalyptic number.

220200121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

220200121000 is an abundant number, since it is smaller than the sum of its proper divisors (295153925480).

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

220200121000 is a wasteful number, since it uses less digits than its factorization.

220200121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36671 (or 36657 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 220200121000 its reverse (121002022), we get a palindrome (220321123022).

The spelling of 220200121000 in words is "two hundred twenty billion, two hundred million, one hundred twenty-one thousand".