22121010012021 has 8 divisors (see below), whose sum is σ = 29496130108704. Its totient is φ = 14746614961680.

The previous prime is 22121010011993. The next prime is 22121010012103. The reversal of 22121010012021 is 12021001012122.

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

It is not a de Polignac number, because 22121010012021 - 2²¹ = 22121007914869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121010012121) 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, 181190391 + ... + 181312436.

It is an arithmetic number, because the mean of its divisors is an integer number (3687016263588).

Almost surely, 2^{22121010012021} is an apocalyptic number.

It is an amenable number.

22121010012021 is a deficient number, since it is larger than the sum of its proper divisors (7375120096683).

22121010012021 is a wasteful number, since it uses less digits than its factorization.

22121010012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362523171.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 22121010012021 its reverse (12021001012122), we get a palindrome (34142011024143).

The spelling of 22121010012021 in words is "twenty-two trillion, one hundred twenty-one billion, ten million, twelve thousand, twenty-one".