2101123044 has 24 divisors (see below), whose sum is σ = 5447356320. Its totient is φ = 700374312.

The previous prime is 2101123001. The next prime is 2101123069. The reversal of 2101123044 is 4403211012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9727314 + ... + 9727529.

It is an arithmetic number, because the mean of its divisors is an integer number (226973180).

Almost surely, 2^2101123044 is an apocalyptic number.

It is an amenable number.

2101123044 is an abundant number, since it is smaller than the sum of its proper divisors (3346233276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2101123044 is a wasteful number, since it uses less digits than its factorization.

2101123044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19454856 (or 19454848 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2101123044 is about 45838.0087263834. The cubic root of 2101123044 is about 1280.8074015682.

Adding to 2101123044 its reverse (4403211012), we get a palindrome (6504334056).

The spelling of 2101123044 in words is "two billion, one hundred one million, one hundred twenty-three thousand, forty-four".