221021012195 has 8 divisors (see below), whose sum is σ = 271694122560. Its totient is φ = 172504204480.

The previous prime is 221021012161. The next prime is 221021012203. The reversal of 221021012195 is 591210120122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 221021012195 - 2²² = 221016817891 is a prime.

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, 539075435 + ... + 539075844.

It is an arithmetic number, because the mean of its divisors is an integer number (33961765320).

Almost surely, 2^221021012195 is an apocalyptic number.

221021012195 is a deficient number, since it is larger than the sum of its proper divisors (50673110365).

221021012195 is a wasteful number, since it uses less digits than its factorization.

221021012195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1078151325.

The product of its (nonzero) digits is 720, while the sum is 26.

The spelling of 221021012195 in words is "two hundred twenty-one billion, twenty-one million, twelve thousand, one hundred ninety-five".