1212332121 has 96 divisors (see below), whose sum is σ = 2415399168. Its totient is φ = 565470720.

The previous prime is 1212332111. The next prime is 1212332137.

1212332121 is a `hidden beast` number, since 1 + 212 + 332 + 121 = 666.

1212332121 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 1212332121 - 2⁵ = 1212332089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1212332094 and 1212332103.

It is not an unprimeable number, because it can be changed into a prime (1212332111) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 331515 + ... + 335151.

It is an arithmetic number, because the mean of its divisors is an integer number (25160408).

Almost surely, 2^1212332121 is an apocalyptic number.

1212332121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1212332121 is a deficient number, since it is larger than the sum of its proper divisors (1203067047).

1212332121 is a wasteful number, since it uses less digits than its factorization.

1212332121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3711 (or 3708 counting only the distinct ones).

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

The square root of 1212332121 is about 34818.5600075592. The cubic root of 1212332121 is about 1066.2864016375.

It can be divided in two parts, 12123 and 32121, that added together give a palindrome (44244).

The spelling of 1212332121 in words is "one billion, two hundred twelve million, three hundred thirty-two thousand, one hundred twenty-one".