21110301199 has 4 divisors (see below), whose sum is σ = 22734170536. Its totient is φ = 19486431864.

The previous prime is 21110301193. The next prime is 21110301307. The reversal of 21110301199 is 99110301112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21110301199 - 2²³ = 21101912591 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 (21110301193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 811934649 + ... + 811934674.

It is an arithmetic number, because the mean of its divisors is an integer number (5683542634).

Almost surely, 2^21110301199 is an apocalyptic number.

21110301199 is a deficient number, since it is larger than the sum of its proper divisors (1623869337).

21110301199 is a wasteful number, since it uses less digits than its factorization.

21110301199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1623869336.

The product of its (nonzero) digits is 486, while the sum is 28.

The spelling of 21110301199 in words is "twenty-one billion, one hundred ten million, three hundred one thousand, one hundred ninety-nine".