2222200121021 has 4 divisors (see below), whose sum is σ = 2233366956000. Its totient is φ = 2211033286044.

The previous prime is 2222200121003. The next prime is 2222200121039. The reversal of 2222200121021 is 1201210022222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2222200121003) and next prime (2222200121039).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2222200121021 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2222200121521) 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, 5583417191 + ... + 5583417588.

It is an arithmetic number, because the mean of its divisors is an integer number (558341739000).

Almost surely, 2^{2222200121021} is an apocalyptic number.

It is an amenable number.

2222200121021 is a deficient number, since it is larger than the sum of its proper divisors (11166834979).

2222200121021 is a wasteful number, since it uses less digits than its factorization.

2222200121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11166834978.

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

Adding to 2222200121021 its reverse (1201210022222), we get a palindrome (3423410143243).

The spelling of 2222200121021 in words is "two trillion, two hundred twenty-two billion, two hundred million, one hundred twenty-one thousand, twenty-one".