120002211111021 has 4 divisors (see below), whose sum is σ = 160002948148032. Its totient is φ = 80001474074012.

The previous prime is 120002211110987. The next prime is 120002211111067. The reversal of 120002211111021 is 120111112200021.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 120002211111021 - 2¹⁰ = 120002211109997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120002211111721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20000368518501 + ... + 20000368518506.

It is an arithmetic number, because the mean of its divisors is an integer number (40000737037008).

Almost surely, 2^{120002211111021} is an apocalyptic number.

It is an amenable number.

120002211111021 is a deficient number, since it is larger than the sum of its proper divisors (40000737037011).

120002211111021 is an equidigital number, since it uses as much as digits as its factorization.

120002211111021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40000737037010.

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

Adding to 120002211111021 its reverse (120111112200021), we get a palindrome (240113323311042).

The spelling of 120002211111021 in words is "one hundred twenty trillion, two billion, two hundred eleven million, one hundred eleven thousand, twenty-one".