120021112211211 has 8 divisors (see below), whose sum is σ = 177809055127760. Its totient is φ = 80014074807456.

The previous prime is 120021112211107. The next prime is 120021112211227. The reversal of 120021112211211 is 112112211120021.

It is a happy number.

120021112211211 is a `hidden beast` number, since 1 + 20 + 0 + 211 + 1 + 221 + 1 + 211 = 666.

It is not a de Polignac number, because 120021112211211 - 2¹⁰ = 120021112210187 is a prime.

It is a super-2 number, since 2×120021112211211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120021112211251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2222613189070 + ... + 2222613189123.

It is an arithmetic number, because the mean of its divisors is an integer number (22226131890970).

Almost surely, 2^{120021112211211} is an apocalyptic number.

120021112211211 is a deficient number, since it is larger than the sum of its proper divisors (57787942916549).

120021112211211 is an equidigital number, since it uses as much as digits as its factorization.

120021112211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4445226378202 (or 4445226378196 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 120021112211211 its reverse (112112211120021), we get a palindrome (232133323331232).

The spelling of 120021112211211 in words is "one hundred twenty trillion, twenty-one billion, one hundred twelve million, two hundred eleven thousand, two hundred eleven".