3121111232601 has 4 divisors (see below), whose sum is σ = 4161481643472. Its totient is φ = 2080740821732.

The previous prime is 3121111232587. The next prime is 3121111232611. The reversal of 3121111232601 is 1062321111213.

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 3121111232601 - 2⁶ = 3121111232537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3121111232611) 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, 520185205431 + ... + 520185205436.

It is an arithmetic number, because the mean of its divisors is an integer number (1040370410868).

Almost surely, 2^{3121111232601} is an apocalyptic number.

It is an amenable number.

3121111232601 is a deficient number, since it is larger than the sum of its proper divisors (1040370410871).

3121111232601 is a wasteful number, since it uses less digits than its factorization.

3121111232601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040370410870.

The product of its (nonzero) digits is 432, while the sum is 24.

Adding to 3121111232601 its reverse (1062321111213), we get a palindrome (4183432343814).

The spelling of 3121111232601 in words is "three trillion, one hundred twenty-one billion, one hundred eleven million, two hundred thirty-two thousand, six hundred one".