11031232121000 has 128 divisors (see below), whose sum is σ = 31769948770560. Its totient is φ = 3491203104000.

The previous prime is 11031232120999. The next prime is 11031232121009. The reversal of 11031232121000 is 12123213011.

It is a self number, because there is not a number n which added to its sum of digits gives 11031232121000.

It is not an unprimeable number, because it can be changed into a prime (11031232121009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 60520166 + ... + 60702165.

It is an arithmetic number, because the mean of its divisors is an integer number (248202724770).

Almost surely, 2^{11031232121000} is an apocalyptic number.

11031232121000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11031232121000 is an abundant number, since it is smaller than the sum of its proper divisors (20738716649560).

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

11031232121000 is a wasteful number, since it uses less digits than its factorization.

11031232121000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121222372 (or 121222358 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 11031232121000 its reverse (12123213011), we get a palindrome (11043355334011).

The spelling of 11031232121000 in words is "eleven trillion, thirty-one billion, two hundred thirty-two million, one hundred twenty-one thousand".