21252622111 has 8 divisors (see below), whose sum is σ = 24524524544. Its totient is φ = 18039673080.

The previous prime is 21252622093. The next prime is 21252622133. The reversal of 21252622111 is 11122625212.

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 21252622111 - 2¹¹ = 21252620063 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 (21252622211) 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, 14737575 + ... + 14739016.

It is an arithmetic number, because the mean of its divisors is an integer number (3065565568).

Almost surely, 2^21252622111 is an apocalyptic number.

21252622111 is a deficient number, since it is larger than the sum of its proper divisors (3271902433).

21252622111 is a wasteful number, since it uses less digits than its factorization.

21252622111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29476701.

The product of its digits is 960, while the sum is 25.

The spelling of 21252622111 in words is "twenty-one billion, two hundred fifty-two million, six hundred twenty-two thousand, one hundred eleven".