120211110021 has 8 divisors (see below), whose sum is σ = 160289802304. Its totient is φ = 80136578880.

The previous prime is 120211110011. The next prime is 120211110031. The reversal of 120211110021 is 120011112021.

It is an interprime number because it is at equal distance from previous prime (120211110011) and next prime (120211110031).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 120211110021 - 2⁵ = 120211109989 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 120211109979 and 120211110006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120211110011) 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, 972241 + ... + 1088886.

It is an arithmetic number, because the mean of its divisors is an integer number (20036225288).

Almost surely, 2^120211110021 is an apocalyptic number.

It is an amenable number.

120211110021 is a deficient number, since it is larger than the sum of its proper divisors (40078692283).

120211110021 is a wasteful number, since it uses less digits than its factorization.

120211110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2080571.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 120211110021 its reverse (120011112021), we get a palindrome (240222222042).

The spelling of 120211110021 in words is "one hundred twenty billion, two hundred eleven million, one hundred ten thousand, twenty-one".