21220001199 has 6 divisors (see below), whose sum is σ = 30651112856. Its totient is φ = 14146667460.

The previous prime is 21220001197. The next prime is 21220001213. The reversal of 21220001199 is 99110002212.

It is not a de Polignac number, because 21220001199 - 2¹ = 21220001197 is a prime.

It is a super-2 number, since 2×21220001199² (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 (21220001197) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1178888947 + ... + 1178888964.

Almost surely, 2^21220001199 is an apocalyptic number.

21220001199 is a deficient number, since it is larger than the sum of its proper divisors (9431111657).

21220001199 is a wasteful number, since it uses less digits than its factorization.

21220001199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2357777917 (or 2357777914 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The spelling of 21220001199 in words is "twenty-one billion, two hundred twenty million, one thousand, one hundred ninety-nine".