21160570223 has 4 divisors (see below), whose sum is σ = 22788306408. Its totient is φ = 19532834040.

The previous prime is 21160570213. The next prime is 21160570231. The reversal of 21160570223 is 32207506112.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21160570223 - 2¹⁴ = 21160553839 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 (21160570213) 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, 813868073 + ... + 813868098.

It is an arithmetic number, because the mean of its divisors is an integer number (5697076602).

Almost surely, 2^21160570223 is an apocalyptic number.

21160570223 is a deficient number, since it is larger than the sum of its proper divisors (1627736185).

21160570223 is a wasteful number, since it uses less digits than its factorization.

21160570223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627736184.

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 21160570223 in words is "twenty-one billion, one hundred sixty million, five hundred seventy thousand, two hundred twenty-three".