221404302031 has 8 divisors (see below), whose sum is σ = 242385439104. Its totient is φ = 200565410520.

The previous prime is 221404302017. The next prime is 221404302073. The reversal of 221404302031 is 130203404122.

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 221404302031 - 2¹⁷ = 221404170959 is a prime.

It is a super-2 number, since 2×221404302031² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221404301993 and 221404302011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221404309031) 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, 35558131 + ... + 35564356.

It is an arithmetic number, because the mean of its divisors is an integer number (30298179888).

Almost surely, 2^221404302031 is an apocalyptic number.

221404302031 is a deficient number, since it is larger than the sum of its proper divisors (20981137073).

221404302031 is a wasteful number, since it uses less digits than its factorization.

221404302031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71122781.

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 221404302031 its reverse (130203404122), we get a palindrome (351607706153).

The spelling of 221404302031 in words is "two hundred twenty-one billion, four hundred four million, three hundred two thousand, thirty-one".