3121012201 has 8 divisors (see below), whose sum is σ = 3333847464. Its totient is φ = 2911426560.

The previous prime is 3121012183. The next prime is 3121012241. The reversal of 3121012201 is 1022101213.

It can be written as a sum of positive squares in 4 ways, for example, as 9603801 + 3111408400 = 3099^2 + 55780^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 3121012201 - 2⁷ = 3121012073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121012241) 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, 810420 + ... + 814261.

It is an arithmetic number, because the mean of its divisors is an integer number (416730933).

Almost surely, 2^3121012201 is an apocalyptic number.

It is an amenable number.

3121012201 is a deficient number, since it is larger than the sum of its proper divisors (212835263).

3121012201 is a wasteful number, since it uses less digits than its factorization.

3121012201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1624811.

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

The square root of 3121012201 is about 55866.0200927183. The cubic root of 3121012201 is about 1461.3867166553.

Adding to 3121012201 its reverse (1022101213), we get a palindrome (4143113414).

It can be divided in two parts, 3121012 and 201, that added together give a palindrome (3121213).

The spelling of 3121012201 in words is "three billion, one hundred twenty-one million, twelve thousand, two hundred one".