120111021102021 has 16 divisors (see below), whose sum is σ = 160486229890560. Its totient is φ = 79904921241600.

The previous prime is 120111021102019. The next prime is 120111021102049. The reversal of 120111021102021 is 120201120111021.

It is a happy number.

It is not a de Polignac number, because 120111021102021 - 2¹ = 120111021102019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120111021102421) 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, 59991321 + ... + 61961121.

It is an arithmetic number, because the mean of its divisors is an integer number (10030389368160).

Almost surely, 2^{120111021102021} is an apocalyptic number.

It is an amenable number.

120111021102021 is a deficient number, since it is larger than the sum of its proper divisors (40375208788539).

120111021102021 is a wasteful number, since it uses less digits than its factorization.

120111021102021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2012716.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 120111021102021 its reverse (120201120111021), we get a palindrome (240312141213042).

The spelling of 120111021102021 in words is "one hundred twenty trillion, one hundred eleven billion, twenty-one million, one hundred two thousand, twenty-one".