2100122010 has 48 divisors (see below), whose sum is σ = 6240364416. Its totient is φ = 480027744.

The previous prime is 2100121999. The next prime is 2100122039. The reversal of 2100122010 is 102210012.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2100121983 and 2100122001.

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 23 ways as a sum of consecutive naturals, for example, 1666134 + ... + 1667393.

It is an arithmetic number, because the mean of its divisors is an integer number (130007592).

Almost surely, 2^2100122010 is an apocalyptic number.

2100122010 is an abundant number, since it is smaller than the sum of its proper divisors (4140242406).

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

2100122010 is a wasteful number, since it uses less digits than its factorization.

2100122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333547 (or 3333544 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 2100122010 is about 45827.0881684621. The cubic root of 2100122010 is about 1280.6039650570.

Adding to 2100122010 its reverse (102210012), we get a palindrome (2202332022).

The spelling of 2100122010 in words is "two billion, one hundred million, one hundred twenty-two thousand, ten".