1332212121 has 72 divisors (see below), whose sum is σ = 2106621504. Its totient is φ = 810311040.

The previous prime is 1332212117. The next prime is 1332212131. The reversal of 1332212121 is 1212122331.

1332212121 is a `hidden beast` number, since 1 + 332 + 212 + 121 = 666.

It is not a de Polignac number, because 1332212121 - 2² = 1332212117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1332212094 and 1332212103.

It is not an unprimeable number, because it can be changed into a prime (1332212131) 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 71 ways as a sum of consecutive naturals, for example, 18763516 + ... + 18763586.

It is an arithmetic number, because the mean of its divisors is an integer number (29258632).

Almost surely, 2^1332212121 is an apocalyptic number.

It is an amenable number.

1332212121 is a deficient number, since it is larger than the sum of its proper divisors (774409383).

1332212121 is a wasteful number, since it uses less digits than its factorization.

1332212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239 (or 207 counting only the distinct ones).

The product of its digits is 144, while the sum is 18.

The square root of 1332212121 is about 36499.4811059007. The cubic root of 1332212121 is about 1100.3338163176. Note that the first 3 decimals are identical.

Adding to 1332212121 its reverse (1212122331), we get a palindrome (2544334452).

The spelling of 1332212121 in words is "one billion, three hundred thirty-two million, two hundred twelve thousand, one hundred twenty-one".