122202002021 has 6 divisors (see below), whose sum is σ = 134321208966. Its totient is φ = 111092729000.

The previous prime is 122202001993. The next prime is 122202002063. The reversal of 122202002021 is 120200202221.

It can be written as a sum of positive squares in only one way, i.e., 112552869121 + 9649132900 = 335489^2 + 98230^2 .

It is not a de Polignac number, because 122202002021 - 2²⁶ = 122134893157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 122202001987 and 122202002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122202002621) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 504966830 + ... + 504967071.

It is an arithmetic number, because the mean of its divisors is an integer number (22386868161).

Almost surely, 2^122202002021 is an apocalyptic number.

122202002021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

122202002021 is a deficient number, since it is larger than the sum of its proper divisors (12119206945).

122202002021 is a wasteful number, since it uses less digits than its factorization.

122202002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1009933923 (or 1009933912 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 122202002021 its reverse (120200202221), we get a palindrome (242402204242).

It can be divided in two parts, 12220200 and 2021, that added together give a palindrome (12222221).

The spelling of 122202002021 in words is "one hundred twenty-two billion, two hundred two million, two thousand, twenty-one".