221011122195 has 12 divisors (see below), whose sum is σ = 383085945216. Its totient is φ = 117872598480.

The previous prime is 221011122179. The next prime is 221011122217. The reversal of 221011122195 is 591221110122.

It is not a de Polignac number, because 221011122195 - 2⁴ = 221011122179 is a prime.

It is a super-2 number, since 2×221011122195² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2455679091 + ... + 2455679180.

It is an arithmetic number, because the mean of its divisors is an integer number (31923828768).

Almost surely, 2^221011122195 is an apocalyptic number.

221011122195 is a deficient number, since it is larger than the sum of its proper divisors (162074823021).

221011122195 is a wasteful number, since it uses less digits than its factorization.

221011122195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4911358282 (or 4911358279 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 27.

It can be divided in two parts, 221011 and 122195, that added together give a triangular number (343206 = T₈₂₈).

The spelling of 221011122195 in words is "two hundred twenty-one billion, eleven million, one hundred twenty-two thousand, one hundred ninety-five".