10002122222021 has 4 divisors (see below), whose sum is σ = 10002129548544. Its totient is φ = 10002114895500.

The previous prime is 10002122222009. The next prime is 10002122222023. The reversal of 10002122222021 is 12022222120001.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 10002122222021 - 2⁶ = 10002122221957 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 (10002122222023) 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, 941285 + ... + 4570586.

It is an arithmetic number, because the mean of its divisors is an integer number (2500532387136).

Almost surely, 2^{10002122222021} is an apocalyptic number.

It is an amenable number.

10002122222021 is a deficient number, since it is larger than the sum of its proper divisors (7326523).

10002122222021 is an equidigital number, since it uses as much as digits as its factorization.

10002122222021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326522.

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

Adding to 10002122222021 its reverse (12022222120001), we get a palindrome (22024344342022).

The spelling of 10002122222021 in words is "ten trillion, two billion, one hundred twenty-two million, two hundred twenty-two thousand, twenty-one".