2103121101000 has 128 divisors (see below), whose sum is σ = 6621938294400. Its totient is φ = 555686956800.

The previous prime is 2103121100999. The next prime is 2103121101007. The reversal of 2103121101000 is 1011213012.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (2103121101007) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2888782 + ... + 3542781.

It is an arithmetic number, because the mean of its divisors is an integer number (51733892925).

Almost surely, 2^{2103121101000} is an apocalyptic number.

2103121101000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103121101000 is an abundant number, since it is smaller than the sum of its proper divisors (4518817193400).

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

2103121101000 is a wasteful number, since it uses less digits than its factorization.

2103121101000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6431696 (or 6431682 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 2103121101000 its reverse (1011213012), we get a palindrome (2104132314012).

The spelling of 2103121101000 in words is "two trillion, one hundred three billion, one hundred twenty-one million, one hundred one thousand".