221213111302 has 8 divisors (see below), whose sum is σ = 331822372896. Its totient is φ = 110605653672.

The previous prime is 221213111261. The next prime is 221213111333. The reversal of 221213111302 is 203111312122.

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

It is a super-2 number, since 2×221213111302² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 221213111302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85033 + ... + 670564.

It is an arithmetic number, because the mean of its divisors is an integer number (41477796612).

Almost surely, 2^221213111302 is an apocalyptic number.

221213111302 is a deficient number, since it is larger than the sum of its proper divisors (110609261594).

221213111302 is a wasteful number, since it uses less digits than its factorization.

221213111302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901982.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 221213111302 its reverse (203111312122), we get a palindrome (424324423424).

The spelling of 221213111302 in words is "two hundred twenty-one billion, two hundred thirteen million, one hundred eleven thousand, three hundred two".