221413301441531 has 4 divisors (see below), whose sum is σ = 221413524803832. Its totient is φ = 221413078079232.

The previous prime is 221413301441459. The next prime is 221413301441557. The reversal of 221413301441531 is 135144103314122.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221413301441531 is a prime.

It is a super-2 number, since 2×221413301441531² (a number of 29 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 = 221413301441491 and 221413301441500.

It is not an unprimeable number, because it can be changed into a prime (221413301441581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110187581 + ... + 112179006.

It is an arithmetic number, because the mean of its divisors is an integer number (55353381200958).

Almost surely, 2^{221413301441531} is an apocalyptic number.

221413301441531 is a deficient number, since it is larger than the sum of its proper divisors (223362301).

221413301441531 is an equidigital number, since it uses as much as digits as its factorization.

221413301441531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223362300.

The product of its (nonzero) digits is 34560, while the sum is 35.

Adding to 221413301441531 its reverse (135144103314122), we get a palindrome (356557404755653).

The spelling of 221413301441531 in words is "two hundred twenty-one trillion, four hundred thirteen billion, three hundred one million, four hundred forty-one thousand, five hundred thirty-one".