221214040231 has 8 divisors (see below), whose sum is σ = 224526836864. Its totient is φ = 217901570040.

The previous prime is 221214040219. The next prime is 221214040249. The reversal of 221214040231 is 132040412122.

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 221214040231 - 2¹¹ = 221214038183 is a prime.

It is a super-2 number, since 2×221214040231² (a number of 23 digits) 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 (221214047231) 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, 1516216 + ... + 1655698.

It is an arithmetic number, because the mean of its divisors is an integer number (28065854608).

Almost surely, 2^221214040231 is an apocalyptic number.

221214040231 is a deficient number, since it is larger than the sum of its proper divisors (3312796633).

221214040231 is a wasteful number, since it uses less digits than its factorization.

221214040231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163221.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 221214040231 its reverse (132040412122), we get a palindrome (353254452353).

The spelling of 221214040231 in words is "two hundred twenty-one billion, two hundred fourteen million, forty thousand, two hundred thirty-one".