120021001112021 has 2 divisors, whose sum is σ = 120021001112022. Its totient is φ = 120021001112020.

The previous prime is 120021001111993. The next prime is 120021001112057. The reversal of 120021001112021 is 120211100120021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116497267692100 + 3523733419921 = 10793390^2 + 1877161^2 .

It is a cyclic number.

It is not a de Polignac number, because 120021001112021 - 2³⁸ = 119746123205077 is a prime.

It is a super-2 number, since 2×120021001112021² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120021001111987 and 120021001112005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120021001115021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60010500556010 + 60010500556011.

It is an arithmetic number, because the mean of its divisors is an integer number (60010500556011).

Almost surely, 2^{120021001112021} is an apocalyptic number.

It is an amenable number.

120021001112021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120021001112021 is an equidigital number, since it uses as much as digits as its factorization.

120021001112021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 120021001112021 its reverse (120211100120021), we get a palindrome (240232101232042).

The spelling of 120021001112021 in words is "one hundred twenty trillion, twenty-one billion, one million, one hundred twelve thousand, twenty-one".