3121122203 has 4 divisors (see below), whose sum is σ = 3121524840. Its totient is φ = 3120719568.

The previous prime is 3121122197. The next prime is 3121122211. The reversal of 3121122203 is 3022211213.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3022211213 = 7 ⋅431744459.

It is a cyclic number.

It is not a de Polignac number, because 3121122203 - 2⁶ = 3121122139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3121122703) 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, 189458 + ... + 205271.

It is an arithmetic number, because the mean of its divisors is an integer number (780381210).

Almost surely, 2^3121122203 is an apocalyptic number.

3121122203 is a deficient number, since it is larger than the sum of its proper divisors (402637).

3121122203 is an equidigital number, since it uses as much as digits as its factorization.

3121122203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402636.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 3121122203 is about 55867.0046002110. The cubic root of 3121122203 is about 1461.4038856123.

Adding to 3121122203 its reverse (3022211213), we get a palindrome (6143333416).

The spelling of 3121122203 in words is "three billion, one hundred twenty-one million, one hundred twenty-two thousand, two hundred three".