221332002213 has 24 divisors (see below), whose sum is σ = 358216129728. Its totient is φ = 120976496256.

The previous prime is 221332002211. The next prime is 221332002293. The reversal of 221332002213 is 312200233122.

It is a happy number.

It is not a de Polignac number, because 221332002213 - 2¹ = 221332002211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221332002213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221332002211) 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, 32728356 + ... + 32735117.

It is an arithmetic number, because the mean of its divisors is an integer number (14925672072).

Almost surely, 2^221332002213 is an apocalyptic number.

221332002213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221332002213 is a deficient number, since it is larger than the sum of its proper divisors (136884127515).

221332002213 is a wasteful number, since it uses less digits than its factorization.

221332002213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65463513 (or 65463506 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 21.

Adding to 221332002213 its reverse (312200233122), we get a palindrome (533532235335).

The spelling of 221332002213 in words is "two hundred twenty-one billion, three hundred thirty-two million, two thousand, two hundred thirteen".