121221413148 has 48 divisors (see below), whose sum is σ = 308584080000. Its totient is φ = 36731323200.

The previous prime is 121221413147. The next prime is 121221413161. The reversal of 121221413148 is 841314122121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121221413147) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3574978 + ... + 3608726.

It is an arithmetic number, because the mean of its divisors is an integer number (6428835000).

Almost surely, 2^121221413148 is an apocalyptic number.

It is an amenable number.

121221413148 is an abundant number, since it is smaller than the sum of its proper divisors (187362666852).

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

121221413148 is a wasteful number, since it uses less digits than its factorization.

121221413148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60978 (or 60976 counting only the distinct ones).

The product of its digits is 3072, while the sum is 30.

Adding to 121221413148 its reverse (841314122121), we get a palindrome (962535535269).

The spelling of 121221413148 in words is "one hundred twenty-one billion, two hundred twenty-one million, four hundred thirteen thousand, one hundred forty-eight".