121123011030 has 128 divisors (see below), whose sum is σ = 340468558848. Its totient is φ = 27000110592.

The previous prime is 121123011029. The next prime is 121123011049. The reversal of 121123011030 is 30110321121.

It is a happy number.

121123011030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 6103404 + ... + 6123216.

It is an arithmetic number, because the mean of its divisors is an integer number (2659910616).

Almost surely, 2^121123011030 is an apocalyptic number.

121123011030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121123011030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170234279424).

121123011030 is an abundant number, since it is smaller than the sum of its proper divisors (219345547818).

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

121123011030 is a wasteful number, since it uses less digits than its factorization.

121123011030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20550.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 121123011030 its reverse (30110321121), we get a palindrome (151233332151).

The spelling of 121123011030 in words is "one hundred twenty-one billion, one hundred twenty-three million, eleven thousand, thirty".