221346460365 has 16 divisors (see below), whose sum is σ = 354478977216. Its totient is φ = 117943232000.

The previous prime is 221346460303. The next prime is 221346460373. The reversal of 221346460365 is 563064643122.

It is a happy number.

It is not a de Polignac number, because 221346460365 - 2⁹ = 221346459853 is a prime.

It is a super-2 number, since 2×221346460365² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6746436 + ... + 6779165.

It is an arithmetic number, because the mean of its divisors is an integer number (22154936076).

Almost surely, 2^221346460365 is an apocalyptic number.

It is an amenable number.

221346460365 is a deficient number, since it is larger than the sum of its proper divisors (133132516851).

221346460365 is a wasteful number, since it uses less digits than its factorization.

221346460365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13526700.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 221346460365 in words is "two hundred twenty-one billion, three hundred forty-six million, four hundred sixty thousand, three hundred sixty-five".