2165354261122 has 48 divisors (see below), whose sum is σ = 3720698416512. Its totient is φ = 939351456000.

The previous prime is 2165354261101. The next prime is 2165354261141. The reversal of 2165354261122 is 2211624535612.

It is a super-3 number, since 3×2165354261122³ (a number of 38 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5451153 + ... + 5834875.

It is an arithmetic number, because the mean of its divisors is an integer number (77514550344).

Almost surely, 2^{2165354261122} is an apocalyptic number.

2165354261122 is a deficient number, since it is larger than the sum of its proper divisors (1555344155390).

2165354261122 is a wasteful number, since it uses less digits than its factorization.

2165354261122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384523 (or 384506 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

Adding to 2165354261122 its reverse (2211624535612), we get a palindrome (4376978796734).

The spelling of 2165354261122 in words is "two trillion, one hundred sixty-five billion, three hundred fifty-four million, two hundred sixty-one thousand, one hundred twenty-two".