122123043021 has 32 divisors (see below), whose sum is σ = 197063850240. Its totient is φ = 65671289856.

The previous prime is 122123042947. The next prime is 122123043041. The reversal of 122123043021 is 120340321221.

It is not a de Polignac number, because 122123043021 - 2⁷ = 122123042893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122123043041) 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 in 31 ways as a sum of consecutive naturals, for example, 3680935 + ... + 3713963.

It is an arithmetic number, because the mean of its divisors is an integer number (6158245320).

Almost surely, 2^122123043021 is an apocalyptic number.

It is an amenable number.

122123043021 is a deficient number, since it is larger than the sum of its proper divisors (74940807219).

122123043021 is a wasteful number, since it uses less digits than its factorization.

122123043021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43413.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 122123043021 its reverse (120340321221), we get a palindrome (242463364242).

The spelling of 122123043021 in words is "one hundred twenty-two billion, one hundred twenty-three million, forty-three thousand, twenty-one".