120021113311211 has 24 divisors (see below), whose sum is σ = 139974433972560. Its totient is φ = 102611446926912.

The previous prime is 120021113311207. The next prime is 120021113311217. The reversal of 120021113311211 is 112113311120021.

It is not a de Polignac number, because 120021113311211 - 2² = 120021113311207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (120021113311217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 468358505 + ... + 468614693.

It is an arithmetic number, because the mean of its divisors is an integer number (5832268082190).

Almost surely, 2^{120021113311211} is an apocalyptic number.

120021113311211 is a deficient number, since it is larger than the sum of its proper divisors (19953320661349).

120021113311211 is a wasteful number, since it uses less digits than its factorization.

120021113311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280683 (or 280676 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 20.

Adding to 120021113311211 its reverse (112113311120021), we get a palindrome (232134424431232).

The spelling of 120021113311211 in words is "one hundred twenty trillion, twenty-one billion, one hundred thirteen million, three hundred eleven thousand, two hundred eleven".