12121764 has 24 divisors (see below), whose sum is σ = 28452480. Its totient is φ = 4016544.

The previous prime is 12121757. The next prime is 12121771. The reversal of 12121764 is 46712121.

12121764 is nontrivially palindromic in base 11.

It is an interprime number because it is at equal distance from previous prime (12121757) and next prime (12121771).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 844 + ... + 4995.

It is an arithmetic number, because the mean of its divisors is an integer number (1185520).

Almost surely, 2^12121764 is an apocalyptic number.

It is an amenable number.

12121764 is an abundant number, since it is smaller than the sum of its proper divisors (16330716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12121764 is a wasteful number, since it uses less digits than its factorization.

12121764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6019 (or 6017 counting only the distinct ones).

The product of its digits is 672, while the sum is 24.

The square root of 12121764 is about 3481.6323757686. The cubic root of 12121764 is about 229.7146050571.

Adding to 12121764 its reverse (46712121), we get a palindrome (58833885).

The spelling of 12121764 in words is "twelve million, one hundred twenty-one thousand, seven hundred sixty-four".