221631125333133 has 16 divisors (see below), whose sum is σ = 303543833955200. Its totient is φ = 143737538544576.

The previous prime is 221631125333119. The next prime is 221631125333141. The reversal of 221631125333133 is 331333521136122.

It is not a de Polignac number, because 221631125333133 - 2²⁶ = 221631058224269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221631125333091 and 221631125333100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221631125333153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 160360210 + ... + 161736387.

It is an arithmetic number, because the mean of its divisors is an integer number (18971489622200).

Almost surely, 2^{221631125333133} is an apocalyptic number.

It is an amenable number.

221631125333133 is a deficient number, since it is larger than the sum of its proper divisors (81912708622067).

221631125333133 is a wasteful number, since it uses less digits than its factorization.

221631125333133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322102836.

The product of its digits is 174960, while the sum is 39.

Adding to 221631125333133 its reverse (331333521136122), we get a palindrome (552964646469255).

The spelling of 221631125333133 in words is "two hundred twenty-one trillion, six hundred thirty-one billion, one hundred twenty-five million, three hundred thirty-three thousand, one hundred thirty-three".