122020997 has 4 divisors (see below), whose sum is σ = 139452576. Its totient is φ = 104589420.

The previous prime is 122020979. The next prime is 122021041. The reversal of 122020997 is 799020221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 799020221 = 131 ⋅6099391.

It is a cyclic number.

It is not a de Polignac number, because 122020997 - 2⁶ = 122020933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122020097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8715779 + ... + 8715792.

It is an arithmetic number, because the mean of its divisors is an integer number (34863144).

Almost surely, 2^122020997 is an apocalyptic number.

It is an amenable number.

122020997 is a deficient number, since it is larger than the sum of its proper divisors (17431579).

122020997 is an equidigital number, since it uses as much as digits as its factorization.

122020997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17431578.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 122020997 is about 11046.3114658242. The cubic root of 122020997 is about 495.9960178422.

The spelling of 122020997 in words is "one hundred twenty-two million, twenty thousand, nine hundred ninety-seven".