221611061232466 has 32 divisors (see below), whose sum is σ = 353321853816240. Its totient is φ = 104049378994176.

The previous prime is 221611061232433. The next prime is 221611061232467. The reversal of 221611061232466 is 664232160116122.

It can be written as a sum of positive squares in 8 ways, for example, as 109164569794225 + 112446491438241 = 10448185^2 + 10604079^2 .

It is a super-2 number, since 2×221611061232466² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (221611061232467) 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, 16621095 + ... + 26823178.

Almost surely, 2^{221611061232466} is an apocalyptic number.

221611061232466 is a deficient number, since it is larger than the sum of its proper divisors (131710792583774).

221611061232466 is a wasteful number, since it uses less digits than its factorization.

221611061232466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43446718.

The product of its (nonzero) digits is 248832, while the sum is 43.

The spelling of 221611061232466 in words is "two hundred twenty-one trillion, six hundred eleven billion, sixty-one million, two hundred thirty-two thousand, four hundred sixty-six".