22121434453 has 8 divisors (see below), whose sum is σ = 22507725600. Its totient is φ = 21735521808.

The previous prime is 22121434411. The next prime is 22121434457. The reversal of 22121434453 is 35443412122.

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 22121434453 - 2¹⁷ = 22121303381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121434457) 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, 24583 + ... + 211771.

It is an arithmetic number, because the mean of its divisors is an integer number (2813465700).

Almost surely, 2^22121434453 is an apocalyptic number.

It is an amenable number.

22121434453 is a deficient number, since it is larger than the sum of its proper divisors (386291147).

22121434453 is a wasteful number, since it uses less digits than its factorization.

22121434453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189251.

The product of its digits is 23040, while the sum is 31.

Adding to 22121434453 its reverse (35443412122), we get a palindrome (57564846575).

The spelling of 22121434453 in words is "twenty-two billion, one hundred twenty-one million, four hundred thirty-four thousand, four hundred fifty-three".