23220229987 has 4 divisors (see below), whose sum is σ = 23969269696. Its totient is φ = 22471190280.

The previous prime is 23220229969. The next prime is 23220230051. The reversal of 23220229987 is 78992202232.

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 23220229987 - 2¹¹ = 23220227939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23220229187) 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, 374519808 + ... + 374519869.

It is an arithmetic number, because the mean of its divisors is an integer number (5992317424).

Almost surely, 2^23220229987 is an apocalyptic number.

23220229987 is a deficient number, since it is larger than the sum of its proper divisors (749039709).

23220229987 is an equidigital number, since it uses as much as digits as its factorization.

23220229987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 749039708.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 23220229987 in words is "twenty-three billion, two hundred twenty million, two hundred twenty-nine thousand, nine hundred eighty-seven".