3211230121 has 4 divisors (see below), whose sum is σ = 3503160144. Its totient is φ = 2919300100.

The previous prime is 3211230101. The next prime is 3211230133. The reversal of 3211230121 is 1210321123.

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 3211230121 - 2⁵ = 3211230089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3211230095 and 3211230104.

It is not an unprimeable number, because it can be changed into a prime (3211230101) 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, 145964995 + ... + 145965016.

It is an arithmetic number, because the mean of its divisors is an integer number (875790036).

Almost surely, 2^3211230121 is an apocalyptic number.

It is an amenable number.

3211230121 is a deficient number, since it is larger than the sum of its proper divisors (291930023).

3211230121 is a wasteful number, since it uses less digits than its factorization.

3211230121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291930022.

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

The square root of 3211230121 is about 56667.7167441922. The cubic root of 3211230121 is about 1475.3344251376.

Adding to 3211230121 its reverse (1210321123), we get a palindrome (4421551244).

It can be divided in two parts, 3211 and 230121, that added together give a palindrome (233332).

The spelling of 3211230121 in words is "three billion, two hundred eleven million, two hundred thirty thousand, one hundred twenty-one".