2220002100021 has 8 divisors (see below), whose sum is σ = 2975028195744. Its totient is φ = 1472488702160.

The previous prime is 2220002100007. The next prime is 2220002100023. The reversal of 2220002100021 is 1200012000222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2220002100021 - 2¹⁰ = 2220002098997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2220002100023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1878173775 + ... + 1878174956.

It is an arithmetic number, because the mean of its divisors is an integer number (371878524468).

Almost surely, 2^{2220002100021} is an apocalyptic number.

It is an amenable number.

2220002100021 is a deficient number, since it is larger than the sum of its proper divisors (755026095723).

2220002100021 is a wasteful number, since it uses less digits than its factorization.

2220002100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756348931.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 2220002100021 its reverse (1200012000222), we get a palindrome (3420014100243).

The spelling of 2220002100021 in words is "two trillion, two hundred twenty billion, two million, one hundred thousand, twenty-one".