201222101021100 has 72 divisors (see below), whose sum is σ = 583449299229888. Its totient is φ = 53544324916800.

The previous prime is 201222101021069. The next prime is 201222101021113. The reversal of 201222101021100 is 1120101222102.

201222101021100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 201222101021100.

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, 717997306 + ... + 718277505.

It is an arithmetic number, because the mean of its divisors is an integer number (8103462489304).

Almost surely, 2^{201222101021100} is an apocalyptic number.

201222101021100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201222101021100 is an abundant number, since it is smaller than the sum of its proper divisors (382227198208788).

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

201222101021100 is a wasteful number, since it uses less digits than its factorization.

201222101021100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436275295 (or 1436275288 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 201222101021100 its reverse (1120101222102), we get a palindrome (202342202243202).

The spelling of 201222101021100 in words is "two hundred one trillion, two hundred twenty-two billion, one hundred one million, twenty-one thousand, one hundred".