121145503740 has 48 divisors (see below), whose sum is σ = 340728557568. Its totient is φ = 32160596544.

The previous prime is 121145503729. The next prime is 121145503741. The reversal of 121145503740 is 47305541121.

It is a super-3 number, since 3×121145503740³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121145503741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4513732 + ... + 4540491.

It is an arithmetic number, because the mean of its divisors is an integer number (7098511616).

Almost surely, 2^121145503740 is an apocalyptic number.

121145503740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121145503740 is an abundant number, since it is smaller than the sum of its proper divisors (219583053828).

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

121145503740 is a wasteful number, since it uses less digits than its factorization.

121145503740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9054458 (or 9054456 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 33.

The spelling of 121145503740 in words is "one hundred twenty-one billion, one hundred forty-five million, five hundred three thousand, seven hundred forty".