3100121021 has 8 divisors (see below), whose sum is σ = 3147560064. Its totient is φ = 3052716480.

The previous prime is 3100121009. The next prime is 3100121039. The reversal of 3100121021 is 1201210013.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3100121021 is a prime.

It is a super-2 number, since 2×3100121021² = 19221500689692164882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3100120993 and 3100121011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3100121041) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 217061 + ... + 230901.

It is an arithmetic number, because the mean of its divisors is an integer number (393445008).

Almost surely, 2^3100121021 is an apocalyptic number.

It is an amenable number.

3100121021 is a deficient number, since it is larger than the sum of its proper divisors (47439043).

3100121021 is a wasteful number, since it uses less digits than its factorization.

3100121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17251.

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

The square root of 3100121021 is about 55678.7304183563. The cubic root of 3100121021 is about 1458.1187098473.

Adding to 3100121021 its reverse (1201210013), we get a palindrome (4301331034).

The spelling of 3100121021 in words is "three billion, one hundred million, one hundred twenty-one thousand, twenty-one".