122220000202021 has 2 divisors, whose sum is σ = 122220000202022. Its totient is φ = 122220000202020.

The previous prime is 122220000202009. The next prime is 122220000202061. The reversal of 122220000202021 is 120202000022221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75259337945796 + 46960662256225 = 8675214^2 + 6852785^2 .

It is a cyclic number.

It is not a de Polignac number, because 122220000202021 - 2²⁹ = 122219463331109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122220000201986 and 122220000202004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122220000202061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61110000101010 + 61110000101011.

It is an arithmetic number, because the mean of its divisors is an integer number (61110000101011).

Almost surely, 2^{122220000202021} is an apocalyptic number.

It is an amenable number.

122220000202021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122220000202021 is an equidigital number, since it uses as much as digits as its factorization.

122220000202021 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 16.

Adding to 122220000202021 its reverse (120202000022221), we get a palindrome (242422000224242).

The spelling of 122220000202021 in words is "one hundred twenty-two trillion, two hundred twenty billion, two hundred two thousand, twenty-one".