120211202102021 has 2 divisors, whose sum is σ = 120211202102022. Its totient is φ = 120211202102020.

The previous prime is 120211202102009. The next prime is 120211202102063. The reversal of 120211202102021 is 120201202112021.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 109314343622500 + 10896858479521 = 10455350^2 + 3301039^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120211202102021 is a prime.

It is a super-2 number, since 2×120211202102021² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120211202102521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105601051010 + 60105601051011.

It is an arithmetic number, because the mean of its divisors is an integer number (60105601051011).

Almost surely, 2^{120211202102021} is an apocalyptic number.

It is an amenable number.

120211202102021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120211202102021 is an equidigital number, since it uses as much as digits as its factorization.

120211202102021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 120211202102021 its reverse (120201202112021), we get a palindrome (240412404214042).

The spelling of 120211202102021 in words is "one hundred twenty trillion, two hundred eleven billion, two hundred two million, one hundred two thousand, twenty-one".