122021200000001 has 2 divisors, whose sum is σ = 122021200000002. Its totient is φ = 122021200000000.

The previous prime is 122021199999967. The next prime is 122021200000043. The reversal of 122021200000001 is 100000002120221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121454153349376 + 567046650625 = 11020624^2 + 753025^2 .

It is a cyclic number.

It is not a de Polignac number, because 122021200000001 - 2²² = 122021195805697 is a prime.

It is not a weakly prime, because it can be changed into another prime (122021200000081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61010600000000 + 61010600000001.

It is an arithmetic number, because the mean of its divisors is an integer number (61010600000001).

Almost surely, 2^{122021200000001} is an apocalyptic number.

It is an amenable number.

122021200000001 is a deficient number, since it is larger than the sum of its proper divisors (1).

122021200000001 is an equidigital number, since it uses as much as digits as its factorization.

122021200000001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 122021200000001 its reverse (100000002120221), we get a palindrome (222021202120222).

The spelling of 122021200000001 in words is "one hundred twenty-two trillion, twenty-one billion, two hundred million, one", and thus it is an aban number.