3121000021103 has 16 divisors (see below), whose sum is σ = 3184306992000. Its totient is φ = 3057859284480.

The previous prime is 3121000021079. The next prime is 3121000021159. The reversal of 3121000021103 is 3011200001213.

It is a cyclic number.

It is not a de Polignac number, because 3121000021103 - 2⁶ = 3121000021039 is a prime.

It is a super-2 number, since 2×3121000021103² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121000021193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152987498 + ... + 153007896.

It is an arithmetic number, because the mean of its divisors is an integer number (199019187000).

Almost surely, 2^{3121000021103} is an apocalyptic number.

3121000021103 is a deficient number, since it is larger than the sum of its proper divisors (63306970897).

3121000021103 is a wasteful number, since it uses less digits than its factorization.

3121000021103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24322.

The product of its (nonzero) digits is 36, while the sum is 14.

Adding to 3121000021103 its reverse (3011200001213), we get a palindrome (6132200022316).

The spelling of 3121000021103 in words is "three trillion, one hundred twenty-one billion, twenty-one thousand, one hundred three".