3121100201 has 2 divisors, whose sum is σ = 3121100202. Its totient is φ = 3121100200.

The previous prime is 3121100153. The next prime is 3121100209. The reversal of 3121100201 is 1020011213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1940490601 + 1180609600 = 44051^2 + 34360^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121100201 is a prime.

It is not a weakly prime, because it can be changed into another prime (3121100209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1560550100 + 1560550101.

It is an arithmetic number, because the mean of its divisors is an integer number (1560550101).

Almost surely, 2^3121100201 is an apocalyptic number.

It is an amenable number.

3121100201 is a deficient number, since it is larger than the sum of its proper divisors (1).

3121100201 is an equidigital number, since it uses as much as digits as its factorization.

3121100201 is an evil number, because the sum of its binary digits is even.

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

The square root of 3121100201 is about 55866.8076857807. The cubic root of 3121100201 is about 1461.4004516035.

Adding to 3121100201 its reverse (1020011213), we get a palindrome (4141111414).

The spelling of 3121100201 in words is "three billion, one hundred twenty-one million, one hundred thousand, two hundred one".