221165403615034 has 4 divisors (see below), whose sum is σ = 331748105422554. Its totient is φ = 110582701807516.

The previous prime is 221165403614899. The next prime is 221165403615043. The reversal of 221165403615034 is 430516304561122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 195627692969809 + 25537710645225 = 13986697^2 + 5053485^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55291350903757 + ... + 55291350903760.

Almost surely, 2^{221165403615034} is an apocalyptic number.

221165403615034 is a deficient number, since it is larger than the sum of its proper divisors (110582701807520).

221165403615034 is a wasteful number, since it uses less digits than its factorization.

221165403615034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110582701807519.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 221165403615034 in words is "two hundred twenty-one trillion, one hundred sixty-five billion, four hundred three million, six hundred fifteen thousand, thirty-four".