2211165998 has 8 divisors (see below), whose sum is σ = 3397645440. Its totient is φ = 1078617520.

The previous prime is 2211165977. The next prime is 2211166031. The reversal of 2211165998 is 8995611122.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2211165998² = 9778510141422672008, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13482638 + ... + 13482801.

It is an arithmetic number, because the mean of its divisors is an integer number (424705680).

Almost surely, 2^2211165998 is an apocalyptic number.

2211165998 is a deficient number, since it is larger than the sum of its proper divisors (1186479442).

2211165998 is a wasteful number, since it uses less digits than its factorization.

2211165998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26965482.

The product of its digits is 77760, while the sum is 44.

The square root of 2211165998 is about 47023.0368861902. The cubic root of 2211165998 is about 1302.7880985605.

The spelling of 2211165998 in words is "two billion, two hundred eleven million, one hundred sixty-five thousand, nine hundred ninety-eight".