21223541023 has 8 divisors (see below), whose sum is σ = 21843699840. Its totient is φ = 20612305560.

The previous prime is 21223540993. The next prime is 21223541051. The reversal of 21223541023 is 32014532212.

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 21223541023 - 2⁵ = 21223540991 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 (21223541093) 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, 2226013 + ... + 2235526.

It is an arithmetic number, because the mean of its divisors is an integer number (2730462480).

Almost surely, 2^21223541023 is an apocalyptic number.

21223541023 is a deficient number, since it is larger than the sum of its proper divisors (620158817).

21223541023 is an equidigital number, since it uses as much as digits as its factorization.

21223541023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4461677.

The product of its (nonzero) digits is 2880, while the sum is 25.

The spelling of 21223541023 in words is "twenty-one billion, two hundred twenty-three million, five hundred forty-one thousand, twenty-three".