221431357142213 has 16 divisors (see below), whose sum is σ = 234850213195776. Its totient is φ = 208328556733440.

The previous prime is 221431357142209. The next prime is 221431357142257. The reversal of 221431357142213 is 312241753134122.

It is a cyclic number.

It is not a de Polignac number, because 221431357142213 - 2² = 221431357142209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221431357142713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94196645 + ... + 96518757.

It is an arithmetic number, because the mean of its divisors is an integer number (14678138324736).

Almost surely, 2^{221431357142213} is an apocalyptic number.

221431357142213 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

221431357142213 is a deficient number, since it is larger than the sum of its proper divisors (13418856053563).

221431357142213 is a wasteful number, since it uses less digits than its factorization.

221431357142213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2390164.

The product of its digits is 241920, while the sum is 41.

The spelling of 221431357142213 in words is "two hundred twenty-one trillion, four hundred thirty-one billion, three hundred fifty-seven million, one hundred forty-two thousand, two hundred thirteen".