22222001002021 has 4 divisors (see below), whose sum is σ = 22224525377632. Its totient is φ = 22219476626412.

The previous prime is 22222001001983. The next prime is 22222001002039. The reversal of 22222001002021 is 12020010022222.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22222001002021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22222001001986 and 22222001002004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222001002051) 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, 1262174601 + ... + 1262192206.

It is an arithmetic number, because the mean of its divisors is an integer number (5556131344408).

Almost surely, 2^{22222001002021} is an apocalyptic number.

It is an amenable number.

22222001002021 is a deficient number, since it is larger than the sum of its proper divisors (2524375611).

22222001002021 is an equidigital number, since it uses as much as digits as its factorization.

22222001002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2524375610.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22222001002021 its reverse (12020010022222), we get a palindrome (34242011024243).

The spelling of 22222001002021 in words is "twenty-two trillion, two hundred twenty-two billion, one million, two thousand, twenty-one".