122700047021 has 2 divisors, whose sum is σ = 122700047022. Its totient is φ = 122700047020.

The previous prime is 122700046999. The next prime is 122700047069. The reversal of 122700047021 is 120740007221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91367152900 + 31332894121 = 302270^2 + 177011^2 .

It is a cyclic number.

It is not a de Polignac number, because 122700047021 - 2¹⁰ = 122700045997 is a prime.

It is a super-2 number, since 2×122700047021² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122700047521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61350023510 + 61350023511.

It is an arithmetic number, because the mean of its divisors is an integer number (61350023511).

Almost surely, 2^122700047021 is an apocalyptic number.

It is an amenable number.

122700047021 is a deficient number, since it is larger than the sum of its proper divisors (1).

122700047021 is an equidigital number, since it uses as much as digits as its factorization.

122700047021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1568, while the sum is 26.

The spelling of 122700047021 in words is "one hundred twenty-two billion, seven hundred million, forty-seven thousand, twenty-one".