200021021121222 has 48 divisors (see below), whose sum is σ = 495291304135680. Its totient is φ = 57148729724016.

The previous prime is 200021021121199. The next prime is 200021021121289. The reversal of 200021021121222 is 222121120120002.

It is a happy number.

200021021121222 is a `hidden beast` number, since 2 + 0 + 0 + 0 + 210 + 211 + 21 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 200021021121195 and 200021021121204.

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, 60647979 + ... + 63860937.

It is an arithmetic number, because the mean of its divisors is an integer number (10318568836160).

Almost surely, 2^{200021021121222} is an apocalyptic number.

200021021121222 is an abundant number, since it is smaller than the sum of its proper divisors (295270283014458).

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

200021021121222 is a wasteful number, since it uses less digits than its factorization.

200021021121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707057 (or 3707054 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 200021021121222 its reverse (222121120120002), we get a palindrome (422142141241224).

The spelling of 200021021121222 in words is "two hundred trillion, twenty-one billion, twenty-one million, one hundred twenty-one thousand, two hundred twenty-two".