2221121213300 has 72 divisors (see below), whose sum is σ = 5264344414560. Its totient is φ = 806705827200.

The previous prime is 2221121213261. The next prime is 2221121213347. The reversal of 2221121213300 is 33121211222.

It is a Harshad number since it is a multiple of its sum of digits (20).

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, 305954 + ... + 2129753.

Almost surely, 2^{2221121213300} is an apocalyptic number.

2221121213300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2221121213300 is an abundant number, since it is smaller than the sum of its proper divisors (3043223201260).

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

2221121213300 is a wasteful number, since it uses less digits than its factorization.

2221121213300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2436561 (or 2436554 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2221121213300 its reverse (33121211222), we get a palindrome (2254242424522).

The spelling of 2221121213300 in words is "two trillion, two hundred twenty-one billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred".