122021221023 has 24 divisors (see below), whose sum is σ = 190421169120. Its totient is φ = 74848512960.

The previous prime is 122021221009. The next prime is 122021221081. The reversal of 122021221023 is 320122120221.

122021221023 is a `hidden beast` number, since 1 + 220 + 212 + 210 + 23 = 666.

It is not a de Polignac number, because 122021221023 - 2²¹ = 122019123871 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 122021220987 and 122021221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122021221723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1640328 + ... + 1713101.

It is an arithmetic number, because the mean of its divisors is an integer number (7934215380).

Almost surely, 2^122021221023 is an apocalyptic number.

122021221023 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

122021221023 is a deficient number, since it is larger than the sum of its proper divisors (68399948097).

122021221023 is a wasteful number, since it uses less digits than its factorization.

122021221023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353759 (or 3353756 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 122021221023 its reverse (320122120221), we get a palindrome (442143341244).

The spelling of 122021221023 in words is "one hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, twenty-three".