2101123102 has 16 divisors (see below), whose sum is σ = 3395220192. Its totient is φ = 969435360.

The previous prime is 2101123081. The next prime is 2101123121. The reversal of 2101123102 is 2013211012.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81823 + ... + 104389.

It is an arithmetic number, because the mean of its divisors is an integer number (212201262).

Almost surely, 2^2101123102 is an apocalyptic number.

2101123102 is a deficient number, since it is larger than the sum of its proper divisors (1294097090).

2101123102 is a wasteful number, since it uses less digits than its factorization.

2101123102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26163.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 2101123102 is about 45838.0093590461. The cubic root of 2101123102 is about 1280.8074133535.

Adding to 2101123102 its reverse (2013211012), we get a palindrome (4114334114).

The spelling of 2101123102 in words is "two billion, one hundred one million, one hundred twenty-three thousand, one hundred two".