3201120121 has 4 divisors (see below), whose sum is σ = 3222319744. Its totient is φ = 3179920500.

The previous prime is 3201120113. The next prime is 3201120127. The reversal of 3201120121 is 1210211023.

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 3201120121 - 2³ = 3201120113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3201120127) 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, 10599585 + ... + 10599886.

It is an arithmetic number, because the mean of its divisors is an integer number (805579936).

Almost surely, 2^3201120121 is an apocalyptic number.

It is an amenable number.

3201120121 is a deficient number, since it is larger than the sum of its proper divisors (21199623).

3201120121 is a wasteful number, since it uses less digits than its factorization.

3201120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21199622.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 3201120121 is about 56578.4421931180. The cubic root of 3201120121 is about 1473.7845194418.

Adding to 3201120121 its reverse (1210211023), we get a palindrome (4411331144).

The spelling of 3201120121 in words is "three billion, two hundred one million, one hundred twenty thousand, one hundred twenty-one".