22121013021 has 8 divisors (see below), whose sum is σ = 29568238464. Its totient is φ = 14710564800.

The previous prime is 22121012993. The next prime is 22121013043. The reversal of 22121013021 is 12031012122.

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

It is not a de Polignac number, because 22121013021 - 2⁵ = 22121012989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121063021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9192901 + ... + 9195306.

It is an arithmetic number, because the mean of its divisors is an integer number (3696029808).

Almost surely, 2^22121013021 is an apocalyptic number.

It is an amenable number.

22121013021 is a deficient number, since it is larger than the sum of its proper divisors (7447225443).

22121013021 is a wasteful number, since it uses less digits than its factorization.

22121013021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18388611.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 22121013021 its reverse (12031012122), we get a palindrome (34152025143).

It can be divided in two parts, 2212101 and 3021, that added together give a palindrome (2215122).

The spelling of 22121013021 in words is "twenty-two billion, one hundred twenty-one million, thirteen thousand, twenty-one".