21122212199 has 16 divisors (see below), whose sum is σ = 23111402496. Its totient is φ = 19144620000.

The previous prime is 21122212193. The next prime is 21122212217. The reversal of 21122212199 is 99121222112.

It is not a de Polignac number, because 21122212199 - 2¹⁶ = 21122146663 is a prime.

It is a super-2 number, since 2×21122212199² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21122212193) 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, 6003989 + ... + 6007505.

It is an arithmetic number, because the mean of its divisors is an integer number (1444462656).

Almost surely, 2^21122212199 is an apocalyptic number.

21122212199 is a deficient number, since it is larger than the sum of its proper divisors (1989190297).

21122212199 is a wasteful number, since it uses less digits than its factorization.

21122212199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5006.

The product of its digits is 2592, while the sum is 32.

The spelling of 21122212199 in words is "twenty-one billion, one hundred twenty-two million, two hundred twelve thousand, one hundred ninety-nine".