22202021102021 has 4 divisors (see below), whose sum is σ = 22202231452044. Its totient is φ = 22201810752000.

The previous prime is 22202021102017. The next prime is 22202021102047. The reversal of 22202021102021 is 12020112020222.

It is a happy number.

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 9966087061921 + 12235934040100 = 3156911^2 + 3497990^2 .

It is a cyclic number.

It is not a de Polignac number, because 22202021102021 - 2² = 22202021102017 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22202021132021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105016610 + ... + 105227811.

It is an arithmetic number, because the mean of its divisors is an integer number (5550557863011).

Almost surely, 2^{22202021102021} is an apocalyptic number.

It is an amenable number.

22202021102021 is a deficient number, since it is larger than the sum of its proper divisors (210350023).

22202021102021 is a wasteful number, since it uses less digits than its factorization.

22202021102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210350022.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22202021102021 its reverse (12020112020222), we get a palindrome (34222133122243).

The spelling of 22202021102021 in words is "twenty-two trillion, two hundred two billion, twenty-one million, one hundred two thousand, twenty-one".