3121212233101 has 4 divisors (see below), whose sum is σ = 3121994691900. Its totient is φ = 3120429774304.

The previous prime is 3121212233093. The next prime is 3121212233107. The reversal of 3121212233101 is 1013322121213.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 546230377476 + 2574981855625 = 739074^2 + 1604675^2 .

It is a cyclic number.

It is not a de Polignac number, because 3121212233101 - 2³ = 3121212233093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121212233107) 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, 391223416 + ... + 391231393.

It is an arithmetic number, because the mean of its divisors is an integer number (780498672975).

Almost surely, 2^{3121212233101} is an apocalyptic number.

It is an amenable number.

3121212233101 is a deficient number, since it is larger than the sum of its proper divisors (782458799).

3121212233101 is an equidigital number, since it uses as much as digits as its factorization.

3121212233101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782458798.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 3121212233101 its reverse (1013322121213), we get a palindrome (4134534354314).

The spelling of 3121212233101 in words is "three trillion, one hundred twenty-one billion, two hundred twelve million, two hundred thirty-three thousand, one hundred one".