22000121210021 has 8 divisors (see below), whose sum is σ = 22066766448000. Its totient is φ = 21933477054720.

The previous prime is 22000121209991. The next prime is 22000121210029. The reversal of 22000121210021 is 12001212100022.

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 22000121210021 - 2³⁰ = 21999047468197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22000121209978 and 22000121210005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22000121210029) 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, 62253380 + ... + 62605778.

It is an arithmetic number, because the mean of its divisors is an integer number (2758345806000).

Almost surely, 2^{22000121210021} is an apocalyptic number.

It is an amenable number.

22000121210021 is a deficient number, since it is larger than the sum of its proper divisors (66645237979).

22000121210021 is a wasteful number, since it uses less digits than its factorization.

22000121210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 541339.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 22000121210021 its reverse (12001212100022), we get a palindrome (34001333310043).

The spelling of 22000121210021 in words is "twenty-two trillion, one hundred twenty-one million, two hundred ten thousand, twenty-one".