221219215023 has 24 divisors (see below), whose sum is σ = 301725257472. Its totient is φ = 144106881984.

The previous prime is 221219214971. The next prime is 221219215031. The reversal of 221219215023 is 320512912122.

It is not a de Polignac number, because 221219215023 - 2⁶ = 221219214959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221219205023) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 123792736 + ... + 123794522.

It is an arithmetic number, because the mean of its divisors is an integer number (12571885728).

Almost surely, 2^221219215023 is an apocalyptic number.

221219215023 is a deficient number, since it is larger than the sum of its proper divisors (80506042449).

221219215023 is an frugal number, since it uses more digits than its factorization.

221219215023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711 (or 2774 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 221219215023 in words is "two hundred twenty-one billion, two hundred nineteen million, two hundred fifteen thousand, twenty-three".