2199023287281 has 12 divisors (see below), whose sum is σ = 3176883448960. Its totient is φ = 1465777150200.

The previous prime is 2199023287267. The next prime is 2199023287291. The reversal of 2199023287281 is 1827823209912.

It is not a de Polignac number, because 2199023287281 - 2⁹ = 2199023286769 is a prime.

It is a super-2 number, since 2×2199023287281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2199023287291) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19806121 + ... + 19916838.

Almost surely, 2^{2199023287281} is an apocalyptic number.

It is an amenable number.

2199023287281 is a deficient number, since it is larger than the sum of its proper divisors (977860161679).

2199023287281 is a wasteful number, since it uses less digits than its factorization.

2199023287281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39729116 (or 39729113 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 54.

The spelling of 2199023287281 in words is "two trillion, one hundred ninety-nine billion, twenty-three million, two hundred eighty-seven thousand, two hundred eighty-one".