121351135444 has 48 divisors (see below), whose sum is σ = 270399467520. Its totient is φ = 46273707360.

The previous prime is 121351135417. The next prime is 121351135463. The reversal of 121351135444 is 444531153121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4176984 + ... + 4205935.

It is an arithmetic number, because the mean of its divisors is an integer number (5633322240).

Almost surely, 2^121351135444 is an apocalyptic number.

121351135444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

121351135444 is an abundant number, since it is smaller than the sum of its proper divisors (149048332076).

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

121351135444 is a wasteful number, since it uses less digits than its factorization.

121351135444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8382988 (or 8382986 counting only the distinct ones).

The product of its digits is 28800, while the sum is 34.

Adding to 121351135444 its reverse (444531153121), we get a palindrome (565882288565).

The spelling of 121351135444 in words is "one hundred twenty-one billion, three hundred fifty-one million, one hundred thirty-five thousand, four hundred forty-four".