121213232012 has 6 divisors (see below), whose sum is σ = 212123156028. Its totient is φ = 60606616004.

The previous prime is 121213231973. The next prime is 121213232017. The reversal of 121213232012 is 210232312121.

It is a super-2 number, since 2×121213232012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121213232017) 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 as a sum of consecutive naturals, namely, 15151653998 + ... + 15151654005.

It is an arithmetic number, because the mean of its divisors is an integer number (35353859338).

Almost surely, 2^121213232012 is an apocalyptic number.

It is an amenable number.

121213232012 is a deficient number, since it is larger than the sum of its proper divisors (90909924016).

121213232012 is a wasteful number, since it uses less digits than its factorization.

121213232012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30303308007 (or 30303308005 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121213232012 its reverse (210232312121), we get a palindrome (331445544133).

The spelling of 121213232012 in words is "one hundred twenty-one billion, two hundred thirteen million, two hundred thirty-two thousand, twelve".