121445387292 has 12 divisors (see below), whose sum is σ = 283372570376. Its totient is φ = 40481795760.

The previous prime is 121445387281. The next prime is 121445387299. The reversal of 121445387292 is 292783544121.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121445387299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5060224459 + ... + 5060224482.

Almost surely, 2^121445387292 is an apocalyptic number.

121445387292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121445387292 is an abundant number, since it is smaller than the sum of its proper divisors (161927183084).

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

121445387292 is a wasteful number, since it uses less digits than its factorization.

121445387292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10120448948 (or 10120448946 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The spelling of 121445387292 in words is "one hundred twenty-one billion, four hundred forty-five million, three hundred eighty-seven thousand, two hundred ninety-two".