120211200021 has 16 divisors (see below), whose sum is σ = 174859711488. Its totient is φ = 72852332400.

The previous prime is 120211200019. The next prime is 120211200023. The reversal of 120211200021 is 120002112021.

It is an interprime number because it is at equal distance from previous prime (120211200019) and next prime (120211200023).

It is not a de Polignac number, because 120211200021 - 2¹ = 120211200019 is a prime.

It is a super-2 number, since 2×120211200021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211200023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 983316 + ... + 1098786.

It is an arithmetic number, because the mean of its divisors is an integer number (10928731968).

Almost surely, 2^120211200021 is an apocalyptic number.

120211200021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

120211200021 is a deficient number, since it is larger than the sum of its proper divisors (54648511467).

120211200021 is a wasteful number, since it uses less digits than its factorization.

120211200021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147032.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 120211200021 its reverse (120002112021), we get a palindrome (240213312042).

It can be divided in two parts, 1202112000 and 21, that added together give a palindrome (1202112021).

The spelling of 120211200021 in words is "one hundred twenty billion, two hundred eleven million, two hundred thousand, twenty-one".