221215550005695 has 32 divisors (see below), whose sum is σ = 406604332956672. Its totient is φ = 100603133908992.

The previous prime is 221215550005661. The next prime is 221215550005699. The reversal of 221215550005695 is 596500055512122.

221215550005695 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 221215550005695 - 2⁶ = 221215550005631 is a prime.

It is a super-2 number, since 2×221215550005695² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221215550005699) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5458049067 + ... + 5458089596.

It is an arithmetic number, because the mean of its divisors is an integer number (12706385404896).

Almost surely, 2^{221215550005695} is an apocalyptic number.

221215550005695 is a deficient number, since it is larger than the sum of its proper divisors (185388782950977).

221215550005695 is a wasteful number, since it uses less digits than its factorization.

221215550005695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10916138871.

The product of its (nonzero) digits is 1350000, while the sum is 48.

The spelling of 221215550005695 in words is "two hundred twenty-one trillion, two hundred fifteen billion, five hundred fifty million, five thousand, six hundred ninety-five".