221562013 has 8 divisors (see below), whose sum is σ = 232100928. Its totient is φ = 211098624.

The previous prime is 221561999. The next prime is 221562049. The reversal of 221562013 is 310265122.

221562013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 221562013 - 2¹³ = 221553821 is a prime.

It is a super-2 number, since 2×221562013² = 98179451209224338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221562113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12831 + ... + 24652.

It is an arithmetic number, because the mean of its divisors is an integer number (29012616).

Almost surely, 2^221562013 is an apocalyptic number.

221562013 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221562013 is a deficient number, since it is larger than the sum of its proper divisors (10538915).

221562013 is a wasteful number, since it uses less digits than its factorization.

221562013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37763.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 221562013 is about 14884.9592878180. The cubic root of 221562013 is about 605.1064293786.

The spelling of 221562013 in words is "two hundred twenty-one million, five hundred sixty-two thousand, thirteen".