21232220199 has 32 divisors (see below), whose sum is σ = 29865369600. Its totient is φ = 13400225280.

The previous prime is 21232220183. The next prime is 21232220257. The reversal of 21232220199 is 99102223212.

It is a happy number.

It is not a de Polignac number, because 21232220199 - 2⁴ = 21232220183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21232225199) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 787567 + ... + 814079.

It is an arithmetic number, because the mean of its divisors is an integer number (933292800).

Almost surely, 2^21232220199 is an apocalyptic number.

21232220199 is a deficient number, since it is larger than the sum of its proper divisors (8633149401).

21232220199 is a wasteful number, since it uses less digits than its factorization.

21232220199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26735.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 21232220199 in words is "twenty-one billion, two hundred thirty-two million, two hundred twenty thousand, one hundred ninety-nine".