22002000021021 has 8 divisors (see below), whose sum is σ = 29336105203744. Its totient is φ = 14667947426160.

The previous prime is 22002000021011. The next prime is 22002000021073. The reversal of 22002000021021 is 12012000020022.

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

It is not a de Polignac number, because 22002000021021 - 2⁵ = 22002000020989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 22002000020988 and 22002000021006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22002000021011) 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, 12160150 + ... + 13851831.

It is an arithmetic number, because the mean of its divisors is an integer number (3667013150468).

Almost surely, 2^{22002000021021} is an apocalyptic number.

It is an amenable number.

22002000021021 is a deficient number, since it is larger than the sum of its proper divisors (7334105182723).

22002000021021 is a wasteful number, since it uses less digits than its factorization.

22002000021021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26293931.

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

Adding to 22002000021021 its reverse (12012000020022), we get a palindrome (34014000041043).

Subtracting from 22002000021021 its reverse (12012000020022), we obtain a palindrome (9990000000999).

The spelling of 22002000021021 in words is "twenty-two trillion, two billion, twenty-one thousand, twenty-one".