221420023013 has 16 divisors (see below), whose sum is σ = 253701427584. Its totient is φ = 189301432320.

The previous prime is 221420023001. The next prime is 221420023117. The reversal of 221420023013 is 310320024122.

It is not a de Polignac number, because 221420023013 - 2²⁶ = 221352914149 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221420022013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9492581 + ... + 9515877.

It is an arithmetic number, because the mean of its divisors is an integer number (15856339224).

Almost surely, 2^221420023013 is an apocalyptic number.

It is an amenable number.

221420023013 is a deficient number, since it is larger than the sum of its proper divisors (32281404571).

221420023013 is a wasteful number, since it uses less digits than its factorization.

221420023013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26732.

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 221420023013 its reverse (310320024122), we get a palindrome (531740047135).

The spelling of 221420023013 in words is "two hundred twenty-one billion, four hundred twenty million, twenty-three thousand, thirteen".