221215550005705 has 16 divisors (see below), whose sum is σ = 274025143332864. Its totient is φ = 171261588651840.

The previous prime is 221215550005699. The next prime is 221215550005757. The reversal of 221215550005705 is 507500055512122.

It is a happy number.

It is not a de Polignac number, because 221215550005705 - 2³⁵ = 221181190267337 is a prime.

It is a Duffinian 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, 4376587 + ... + 21484543.

It is an arithmetic number, because the mean of its divisors is an integer number (17126571458304).

Almost surely, 2^{221215550005705} is an apocalyptic number.

It is an amenable number.

221215550005705 is a deficient number, since it is larger than the sum of its proper divisors (52809593327159).

221215550005705 is a wasteful number, since it uses less digits than its factorization.

221215550005705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17191416.

The product of its (nonzero) digits is 175000, while the sum is 40.

The spelling of 221215550005705 in words is "two hundred twenty-one trillion, two hundred fifteen billion, five hundred fifty million, five thousand, seven hundred five".