221099990122 has 16 divisors (see below), whose sum is σ = 367731133344. Its totient is φ = 98852454000.

The previous prime is 221099990119. The next prime is 221099990143.

221099990122 is nontrivially palindromic in base 10.

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, 82375704 + ... + 82378387.

It is an arithmetic number, because the mean of its divisors is an integer number (22983195834).

Almost surely, 2^221099990122 is an apocalyptic number.

221099990122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

221099990122 is a deficient number, since it is larger than the sum of its proper divisors (146631143222).

221099990122 is a wasteful number, since it uses less digits than its factorization.

221099990122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164754165.

The product of its (nonzero) digits is 104976, while the sum is 46.

The spelling of 221099990122 in words is "two hundred twenty-one billion, ninety-nine million, nine hundred ninety thousand, one hundred twenty-two".