20020122101999 has 2 divisors, whose sum is σ = 20020122102000. Its totient is φ = 20020122101998.

The previous prime is 20020122101953. The next prime is 20020122102023. The reversal of 20020122101999 is 99910122102002.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20020122101999 - 2²⁸ = 20019853666543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20020122101599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10010061050999 + 10010061051000.

It is an arithmetic number, because the mean of its divisors is an integer number (10010061051000).

Almost surely, 2^{20020122101999} is an apocalyptic number.

20020122101999 is a deficient number, since it is larger than the sum of its proper divisors (1).

20020122101999 is an equidigital number, since it uses as much as digits as its factorization.

20020122101999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 38.

The spelling of 20020122101999 in words is "twenty trillion, twenty billion, one hundred twenty-two million, one hundred one thousand, nine hundred ninety-nine".