2101003121 has 8 divisors (see below), whose sum is σ = 2401423680. Its totient is φ = 1800651888.

The previous prime is 2101003081. The next prime is 2101003127. The reversal of 2101003121 is 1213001012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-2101003121 is a prime.

It is a super-2 number, since 2×2101003121² = 8828428228903481282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2101003127) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110075 + ... + 127743.

It is an arithmetic number, because the mean of its divisors is an integer number (300177960).

Almost surely, 2^2101003121 is an apocalyptic number.

It is an amenable number.

2101003121 is a deficient number, since it is larger than the sum of its proper divisors (300420559).

2101003121 is a wasteful number, since it uses less digits than its factorization.

2101003121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34663.

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 2101003121 is about 45836.7005902475. The cubic root of 2101003121 is about 1280.7830334588.

Adding to 2101003121 its reverse (1213001012), we get a palindrome (3314004133).

The spelling of 2101003121 in words is "two billion, one hundred one million, three thousand, one hundred twenty-one".