2101121012003 has 4 divisors (see below), whose sum is σ = 2262745705248. Its totient is φ = 1939496318760.

The previous prime is 2101121011967. The next prime is 2101121012009. The reversal of 2101121012003 is 3002101211012.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2101121012003 - 2⁸ = 2101121011747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101121012009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 80812346603 + ... + 80812346628.

It is an arithmetic number, because the mean of its divisors is an integer number (565686426312).

Almost surely, 2^{2101121012003} is an apocalyptic number.

2101121012003 is a deficient number, since it is larger than the sum of its proper divisors (161624693245).

2101121012003 is a wasteful number, since it uses less digits than its factorization.

2101121012003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161624693244.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 2101121012003 its reverse (3002101211012), we get a palindrome (5103222223015).

The spelling of 2101121012003 in words is "two trillion, one hundred one billion, one hundred twenty-one million, twelve thousand, three".