200122001220 has 96 divisors (see below), whose sum is σ = 575042944896. Its totient is φ = 51970432000.

The previous prime is 200122001159. The next prime is 200122001243. The reversal of 200122001220 is 22100221002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 200122001196 and 200122001205.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1297195 + ... + 1443245.

It is an arithmetic number, because the mean of its divisors is an integer number (5990030676).

Almost surely, 2^200122001220 is an apocalyptic number.

200122001220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200122001220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287521472448).

200122001220 is an abundant number, since it is smaller than the sum of its proper divisors (374920943676).

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

200122001220 is a wasteful number, since it uses less digits than its factorization.

200122001220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146661 (or 146659 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 200122001220 its reverse (22100221002), we get a palindrome (222222222222).

The spelling of 200122001220 in words is "two hundred billion, one hundred twenty-two million, one thousand, two hundred twenty".