3102102001021 has 4 divisors (see below), whose sum is σ = 3102105940444. Its totient is φ = 3102098061600.

The previous prime is 3102102000997. The next prime is 3102102001067. The reversal of 3102102001021 is 1201002012013.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 906551536900 + 2195550464121 = 952130^2 + 1481739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3102102001021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3102102000992 and 3102102001010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3102102001721) 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, 337920 + ... + 2513641.

It is an arithmetic number, because the mean of its divisors is an integer number (775526485111).

Almost surely, 2^{3102102001021} is an apocalyptic number.

It is an amenable number.

3102102001021 is a deficient number, since it is larger than the sum of its proper divisors (3939423).

3102102001021 is a wasteful number, since it uses less digits than its factorization.

3102102001021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939422.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 3102102001021 its reverse (1201002012013), we get a palindrome (4303104013034).

The spelling of 3102102001021 in words is "three trillion, one hundred two billion, one hundred two million, one thousand, twenty-one".