122072023021 has 4 divisors (see below), whose sum is σ = 131462178652. Its totient is φ = 112681867392.

The previous prime is 122072022979. The next prime is 122072023037. The reversal of 122072023021 is 120320270221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34523498025 + 87548524996 = 185805^2 + 295886^2 .

It is a cyclic number.

It is not a de Polignac number, because 122072023021 - 2⁹ = 122072022509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122072022983 and 122072023001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122072023421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4695077796 + ... + 4695077821.

It is an arithmetic number, because the mean of its divisors is an integer number (32865544663).

Almost surely, 2^122072023021 is an apocalyptic number.

It is an amenable number.

122072023021 is a deficient number, since it is larger than the sum of its proper divisors (9390155631).

122072023021 is an equidigital number, since it uses as much as digits as its factorization.

122072023021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9390155630.

The product of its (nonzero) digits is 672, while the sum is 22.

Adding to 122072023021 its reverse (120320270221), we get a palindrome (242392293242).

The spelling of 122072023021 in words is "one hundred twenty-two billion, seventy-two million, twenty-three thousand, twenty-one".