3121012002001 has 4 divisors (see below), whose sum is σ = 3285275791600. Its totient is φ = 2956748212404.

The previous prime is 3121012001999. The next prime is 3121012002019. The reversal of 3121012002001 is 1002002101213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3121012002001 - 2¹ = 3121012001999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121012002061) 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, 82131894771 + ... + 82131894808.

It is an arithmetic number, because the mean of its divisors is an integer number (821318947900).

Almost surely, 2^{3121012002001} is an apocalyptic number.

It is an amenable number.

3121012002001 is a deficient number, since it is larger than the sum of its proper divisors (164263789599).

3121012002001 is a wasteful number, since it uses less digits than its factorization.

3121012002001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164263789598.

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

Adding to 3121012002001 its reverse (1002002101213), we get a palindrome (4123014103214).

The spelling of 3121012002001 in words is "three trillion, one hundred twenty-one billion, twelve million, two thousand, one".