21223713754 has 8 divisors (see below), whose sum is σ = 33511127040. Its totient is φ = 10053338076.

The previous prime is 21223713751. The next prime is 21223713757. The reversal of 21223713754 is 45731732212.

It is an interprime number because it is at equal distance from previous prime (21223713751) and next prime (21223713757).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21223713751) 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, 279259354 + ... + 279259429.

It is an arithmetic number, because the mean of its divisors is an integer number (4188890880).

Almost surely, 2^21223713754 is an apocalyptic number.

21223713754 is a deficient number, since it is larger than the sum of its proper divisors (12287413286).

21223713754 is a wasteful number, since it uses less digits than its factorization.

21223713754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558518804.

The product of its digits is 70560, while the sum is 37.

The spelling of 21223713754 in words is "twenty-one billion, two hundred twenty-three million, seven hundred thirteen thousand, seven hundred fifty-four".