100021222199 has 4 divisors (see below), whose sum is σ = 100021904640. Its totient is φ = 100020539760.

The previous prime is 100021222177. The next prime is 100021222211. The reversal of 100021222199 is 991222120001.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 991222120001 = 643 ⋅1541558507.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100021222199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100021222129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21542 + ... + 447779.

It is an arithmetic number, because the mean of its divisors is an integer number (25005476160).

Almost surely, 2^100021222199 is an apocalyptic number.

100021222199 is a deficient number, since it is larger than the sum of its proper divisors (682441).

100021222199 is an equidigital number, since it uses as much as digits as its factorization.

100021222199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682440.

The product of its (nonzero) digits is 1296, while the sum is 29.

The spelling of 100021222199 in words is "one hundred billion, twenty-one million, two hundred twenty-two thousand, one hundred ninety-nine".