121010030140 has 96 divisors (see below), whose sum is σ = 270350136000. Its totient is φ = 45425436672.

The previous prime is 121010030131. The next prime is 121010030143. The reversal of 121010030140 is 41030010121.

It is a self number, because there is not a number n which added to its sum of digits gives 121010030140.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010030143) 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, 3025714 + ... + 3065446.

It is an arithmetic number, because the mean of its divisors is an integer number (2816147250).

Almost surely, 2^121010030140 is an apocalyptic number.

121010030140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121010030140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135175068000).

121010030140 is an abundant number, since it is smaller than the sum of its proper divisors (149340105860).

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

121010030140 is a wasteful number, since it uses less digits than its factorization.

121010030140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39919 (or 39917 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 121010030140 its reverse (41030010121), we get a palindrome (162040040261).

The spelling of 121010030140 in words is "one hundred twenty-one billion, ten million, thirty thousand, one hundred forty".