22122220111021 has 8 divisors (see below), whose sum is σ = 22182069955104. Its totient is φ = 22062414918960.

The previous prime is 22122220111007. The next prime is 22122220111027. The reversal of 22122220111021 is 12011102222122.

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 22122220111021 - 2²⁹ = 22121683240109 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22122220111021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22122220111027) 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, 10170675 + ... + 12152656.

It is an arithmetic number, because the mean of its divisors is an integer number (2772758744388).

Almost surely, 2^{22122220111021} is an apocalyptic number.

It is an amenable number.

22122220111021 is a deficient number, since it is larger than the sum of its proper divisors (59849844083).

22122220111021 is a wasteful number, since it uses less digits than its factorization.

22122220111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22326011.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22122220111021 its reverse (12011102222122), we get a palindrome (34133322333143).

The spelling of 22122220111021 in words is "twenty-two trillion, one hundred twenty-two billion, two hundred twenty million, one hundred eleven thousand, twenty-one".