3221232212121 has 16 divisors (see below), whose sum is σ = 5354775625728. Its totient is φ = 1673367382800.

The previous prime is 3221232212117. The next prime is 3221232212137. The reversal of 3221232212121 is 1212122321223.

It is not a de Polignac number, because 3221232212121 - 2² = 3221232212117 is a prime.

It is a super-2 number, since 2×3221232212121² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3221232212091 and 3221232212100.

It is not an unprimeable number, because it can be changed into a prime (3221232212321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6972363865 + ... + 6972364326.

It is an arithmetic number, because the mean of its divisors is an integer number (334673476608).

Almost surely, 2^{3221232212121} is an apocalyptic number.

It is an amenable number.

3221232212121 is a deficient number, since it is larger than the sum of its proper divisors (2133543413607).

3221232212121 is a wasteful number, since it uses less digits than its factorization.

3221232212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13944728212.

The product of its digits is 1152, while the sum is 24.

Adding to 3221232212121 its reverse (1212122321223), we get a palindrome (4433354533344).

The spelling of 3221232212121 in words is "three trillion, two hundred twenty-one billion, two hundred thirty-two million, two hundred twelve thousand, one hundred twenty-one".