21201122201120 has 96 divisors (see below), whose sum is σ = 53036531388288. Its totient is φ = 7981215510528.

The previous prime is 21201122201113. The next prime is 21201122201143. The reversal of 21201122201120 is 2110222110212.

It is a super-3 number, since 3×21201122201120³ (a number of 41 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59998397 + ... + 60350723.

It is an arithmetic number, because the mean of its divisors is an integer number (552463868628).

Almost surely, 2^{21201122201120} is an apocalyptic number.

21201122201120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21201122201120 is an abundant number, since it is smaller than the sum of its proper divisors (31835409187168).

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

21201122201120 is a wasteful number, since it uses less digits than its factorization.

21201122201120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374482 (or 374474 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 21201122201120 its reverse (2110222110212), we get a palindrome (23311344311332).

The spelling of 21201122201120 in words is "twenty-one trillion, two hundred one billion, one hundred twenty-two million, two hundred one thousand, one hundred twenty".