221732722215053 has 4 divisors (see below), whose sum is σ = 253408825388640. Its totient is φ = 190056619041468.

The previous prime is 221732722215047. The next prime is 221732722215061. The reversal of 221732722215053 is 350512227237122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 221732722215053 - 2¹⁶ = 221732722149517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221732722214995 and 221732722215013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221732722215023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15838051586783 + ... + 15838051586796.

It is an arithmetic number, because the mean of its divisors is an integer number (63352206347160).

Almost surely, 2^{221732722215053} is an apocalyptic number.

It is an amenable number.

221732722215053 is a deficient number, since it is larger than the sum of its proper divisors (31676103173587).

221732722215053 is an equidigital number, since it uses as much as digits as its factorization.

221732722215053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31676103173586.

The product of its (nonzero) digits is 705600, while the sum is 44.

The spelling of 221732722215053 in words is "two hundred twenty-one trillion, seven hundred thirty-two billion, seven hundred twenty-two million, two hundred fifteen thousand, fifty-three".