2202221121000 has 128 divisors (see below), whose sum is σ = 7092573096960. Its totient is φ = 568315104000.

The previous prime is 2202221120951. The next prime is 2202221121007. The reversal of 2202221121000 is 1211222022.

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

It is not an unprimeable number, because it can be changed into a prime (2202221121007) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11746899 + ... + 11932898.

It is an arithmetic number, because the mean of its divisors is an integer number (55410727320).

Almost surely, 2^{2202221121000} is an apocalyptic number.

2202221121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2202221121000 is an abundant number, since it is smaller than the sum of its proper divisors (4890351975960).

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

2202221121000 is a wasteful number, since it uses less digits than its factorization.

2202221121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23679852 (or 23679838 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2202221121000 its reverse (1211222022), we get a palindrome (2203432343022).

The spelling of 2202221121000 in words is "two trillion, two hundred two billion, two hundred twenty-one million, one hundred twenty-one thousand".