120211012021 has 2 divisors, whose sum is σ = 120211012022. Its totient is φ = 120211012020.

The previous prime is 120211011971. The next prime is 120211012057. The reversal of 120211012021 is 120210112021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92692847025 + 27518164996 = 304455^2 + 165886^2 .

It is an emirp because it is prime and its reverse (120210112021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 120211012021 - 2²³ = 120202623413 is a prime.

It is a super-2 number, since 2×120211012021² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 120211011992 and 120211012010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (120211082021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60105506010 + 60105506011.

It is an arithmetic number, because the mean of its divisors is an integer number (60105506011).

Almost surely, 2^120211012021 is an apocalyptic number.

It is an amenable number.

120211012021 is a deficient number, since it is larger than the sum of its proper divisors (1).

120211012021 is an equidigital number, since it uses as much as digits as its factorization.

120211012021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 120211012021 its reverse (120210112021), we get a palindrome (240421124042).

The spelling of 120211012021 in words is "one hundred twenty billion, two hundred eleven million, twelve thousand, twenty-one".