22121421331433 has 4 divisors (see below), whose sum is σ = 22121937037200. Its totient is φ = 22120905625668.

The previous prime is 22121421331349. The next prime is 22121421331447. The reversal of 22121421331433 is 33413312412122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22121421331433 - 2¹⁶ = 22121421265897 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 22121421331433.

It is not an unprimeable number, because it can be changed into a prime (22121421331333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 257788535 + ... + 257874332.

It is an arithmetic number, because the mean of its divisors is an integer number (5530484259300).

Almost surely, 2^{22121421331433} is an apocalyptic number.

It is an amenable number.

22121421331433 is a deficient number, since it is larger than the sum of its proper divisors (515705767).

22121421331433 is an equidigital number, since it uses as much as digits as its factorization.

22121421331433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 515705766.

The product of its digits is 20736, while the sum is 32.

Adding to 22121421331433 its reverse (33413312412122), we get a palindrome (55534733743555).

The spelling of 22121421331433 in words is "twenty-two trillion, one hundred twenty-one billion, four hundred twenty-one million, three hundred thirty-one thousand, four hundred thirty-three".