121131232011306 has 48 divisors (see below), whose sum is σ = 286312032115200. Its totient is φ = 36706197101760.

The previous prime is 121131232011287. The next prime is 121131232011421. The reversal of 121131232011306 is 603110232131121.

121131232011306 is a `hidden beast` number, since 1 + 2 + 1 + 1 + 31 + 2 + 320 + 1 + 1 + 306 = 666.

121131232011306 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×121131232011306² (a number of 29 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 121131232011306.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30103726 + ... + 33889478.

It is an arithmetic number, because the mean of its divisors is an integer number (5964834002400).

Almost surely, 2^{121131232011306} is an apocalyptic number.

121131232011306 is an abundant number, since it is smaller than the sum of its proper divisors (165180800103894).

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

121131232011306 is a wasteful number, since it uses less digits than its factorization.

121131232011306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947371 (or 3947368 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

Adding to 121131232011306 its reverse (603110232131121), we get a palindrome (724241464142427).

The spelling of 121131232011306 in words is "one hundred twenty-one trillion, one hundred thirty-one billion, two hundred thirty-two million, eleven thousand, three hundred six".