221200021198 has 32 divisors (see below), whose sum is σ = 372908422656. Its totient is φ = 97640551008.

The previous prime is 221200021193. The next prime is 221200021199. The reversal of 221200021198 is 891120002122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221200021193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5531311 + ... + 5571157.

It is an arithmetic number, because the mean of its divisors is an integer number (11653388208).

Almost surely, 2^221200021198 is an apocalyptic number.

221200021198 is a deficient number, since it is larger than the sum of its proper divisors (151708401458).

221200021198 is a wasteful number, since it uses less digits than its factorization.

221200021198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49168.

The product of its (nonzero) digits is 1152, while the sum is 28.

The spelling of 221200021198 in words is "two hundred twenty-one billion, two hundred million, twenty-one thousand, one hundred ninety-eight".