221411761027166 has 16 divisors (see below), whose sum is σ = 339842113982448. Its totient is φ = 108131068584000.

The previous prime is 221411761027159. The next prime is 221411761027199. The reversal of 221411761027166 is 661720167114122.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 221411761027166.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36337796 + ... + 41991176.

It is an arithmetic number, because the mean of its divisors is an integer number (21240132123903).

Almost surely, 2^{221411761027166} is an apocalyptic number.

221411761027166 is a deficient number, since it is larger than the sum of its proper divisors (118430352955282).

221411761027166 is a wasteful number, since it uses less digits than its factorization.

221411761027166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6108827.

The product of its (nonzero) digits is 338688, while the sum is 47.

The spelling of 221411761027166 in words is "two hundred twenty-one trillion, four hundred eleven billion, seven hundred sixty-one million, twenty-seven thousand, one hundred sixty-six".