521400113455222 has 8 divisors (see below), whose sum is σ = 784070195801616. Its totient is φ = 260043381521352.

The previous prime is 521400113455201. The next prime is 521400113455271. The reversal of 521400113455222 is 222554311004125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×521400113455222² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328337602138 + ... + 328337603725.

It is an arithmetic number, because the mean of its divisors is an integer number (98008774475202).

Almost surely, 2^{521400113455222} is an apocalyptic number.

521400113455222 is a deficient number, since it is larger than the sum of its proper divisors (262670082346394).

521400113455222 is a wasteful number, since it uses less digits than its factorization.

521400113455222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 656675206262.

The product of its (nonzero) digits is 96000, while the sum is 37.

Adding to 521400113455222 its reverse (222554311004125), we get a palindrome (743954424459347).

The spelling of 521400113455222 in words is "five hundred twenty-one trillion, four hundred billion, one hundred thirteen million, four hundred fifty-five thousand, two hundred twenty-two".