20121331201 has 16 divisors (see below), whose sum is σ = 21502879488. Its totient is φ = 18787384000.

The previous prime is 20121331187. The next prime is 20121331207. The reversal of 20121331201 is 10213312102.

It is a cyclic number.

It is not a de Polignac number, because 20121331201 - 2⁷ = 20121331073 is a prime.

It is a super-2 number, since 2×20121331201² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20121331207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103935 + ... + 225931.

It is an arithmetic number, because the mean of its divisors is an integer number (1343929968).

Almost surely, 2^20121331201 is an apocalyptic number.

It is an amenable number.

20121331201 is a deficient number, since it is larger than the sum of its proper divisors (1381548287).

20121331201 is a wasteful number, since it uses less digits than its factorization.

20121331201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122192.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 20121331201 its reverse (10213312102), we get a palindrome (30334643303).

The spelling of 20121331201 in words is "twenty billion, one hundred twenty-one million, three hundred thirty-one thousand, two hundred one".