122021221985 has 24 divisors (see below), whose sum is σ = 158685748920. Its totient is φ = 90033894912.

The previous prime is 122021221969. The next prime is 122021222117. The reversal of 122021221985 is 589122120221.

It is a happy number.

It can be written as a sum of positive squares in 12 ways, for example, as 41751566224 + 80269655761 = 204332^2 + 283319^2 .

It is not a de Polignac number, because 122021221985 - 2⁴ = 122021221969 is a prime.

It is a super-2 number, since 2×122021221985² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 979757 + ... + 1097253.

It is an arithmetic number, because the mean of its divisors is an integer number (6611906205).

Almost surely, 2^122021221985 is an apocalyptic number.

It is an amenable number.

122021221985 is a deficient number, since it is larger than the sum of its proper divisors (36664526935).

122021221985 is a wasteful number, since it uses less digits than its factorization.

122021221985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118757 (or 118744 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 122021221985 in words is "one hundred twenty-two billion, twenty-one million, two hundred twenty-one thousand, nine hundred eighty-five".