12202021081 has 2 divisors, whose sum is σ = 12202021082. Its totient is φ = 12202021080.

The previous prime is 12202021067. The next prime is 12202021127. The reversal of 12202021081 is 18012020221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10238201856 + 1963819225 = 101184^2 + 44315^2 .

It is a cyclic number.

It is not a de Polignac number, because 12202021081 - 2⁵ = 12202021049 is a prime.

It is a super-2 number, since 2×12202021081² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12202021981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101010540 + 6101010541.

It is an arithmetic number, because the mean of its divisors is an integer number (6101010541).

Almost surely, 2^12202021081 is an apocalyptic number.

It is an amenable number.

12202021081 is a deficient number, since it is larger than the sum of its proper divisors (1).

12202021081 is an equidigital number, since it uses as much as digits as its factorization.

12202021081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 128, while the sum is 19.

The spelling of 12202021081 in words is "twelve billion, two hundred two million, twenty-one thousand, eighty-one".