22021253376654 has 128 divisors (see below), whose sum is σ = 51960992735232. Its totient is φ = 6090863708160.

The previous prime is 22021253376649. The next prime is 22021253376667. The reversal of 22021253376654 is 45667335212022.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 574903267 + ... + 574941569.

It is an arithmetic number, because the mean of its divisors is an integer number (405945255744).

Almost surely, 2^{22021253376654} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22021253376654, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25980496367616).

22021253376654 is an abundant number, since it is smaller than the sum of its proper divisors (29939739358578).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22021253376654 is a wasteful number, since it uses less digits than its factorization.

22021253376654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40930.

The product of its (nonzero) digits is 3628800, while the sum is 48.

Adding to 22021253376654 its reverse (45667335212022), we get a palindrome (67688588588676).

The spelling of 22021253376654 in words is "twenty-two trillion, twenty-one billion, two hundred fifty-three million, three hundred seventy-six thousand, six hundred fifty-four".