3213211121 has 4 divisors (see below), whose sum is σ = 3251924592. Its totient is φ = 3174497652.

The previous prime is 3213211117. The next prime is 3213211129. The reversal of 3213211121 is 1211123123.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1211123123 = 7 ⋅173017589.

It is a cyclic number.

It is not a de Polignac number, because 3213211121 - 2² = 3213211117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3213211121.

It is not an unprimeable number, because it can be changed into a prime (3213211129) 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, 19356611 + ... + 19356776.

It is an arithmetic number, because the mean of its divisors is an integer number (812981148).

Almost surely, 2^3213211121 is an apocalyptic number.

It is an amenable number.

3213211121 is a deficient number, since it is larger than the sum of its proper divisors (38713471).

3213211121 is an equidigital number, since it uses as much as digits as its factorization.

3213211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38713470.

The product of its digits is 72, while the sum is 17.

The square root of 3213211121 is about 56685.1931371853. The cubic root of 3213211121 is about 1475.6377395065.

Adding to 3213211121 its reverse (1211123123), we get a palindrome (4424334244).

The spelling of 3213211121 in words is "three billion, two hundred thirteen million, two hundred eleven thousand, one hundred twenty-one".