121210144012 has 12 divisors (see below), whose sum is σ = 212808691480. Its totient is φ = 60407660736.

The previous prime is 121210143941. The next prime is 121210144019. The reversal of 121210144012 is 210441012121.

It is a happy number.

It is a super-2 number, since 2×121210144012² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121210144019) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 49351437 + ... + 49353892.

Almost surely, 2^121210144012 is an apocalyptic number.

It is an amenable number.

121210144012 is a deficient number, since it is larger than the sum of its proper divisors (91598547468).

121210144012 is a wasteful number, since it uses less digits than its factorization.

121210144012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98705640 (or 98705638 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121210144012 its reverse (210441012121), we get a palindrome (331651156133).

The spelling of 121210144012 in words is "one hundred twenty-one billion, two hundred ten million, one hundred forty-four thousand, twelve".