121002005140100 has 144 divisors (see below), whose sum is σ = 302941024700160. Its totient is φ = 41091814771200.

The previous prime is 121002005140043. The next prime is 121002005140103. The reversal of 121002005140100 is 1041500200121.

It is not an unprimeable number, because it can be changed into a prime (121002005140103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 225350945 + ... + 225887255.

Almost surely, 2^{121002005140100} is an apocalyptic number.

121002005140100 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 121002005140100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (151470512350080).

121002005140100 is an abundant number, since it is smaller than the sum of its proper divisors (181939019560060).

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

121002005140100 is a wasteful number, since it uses less digits than its factorization.

121002005140100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539398 (or 539391 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

Adding to 121002005140100 its reverse (1041500200121), we get a palindrome (122043505340221).

The spelling of 121002005140100 in words is "one hundred twenty-one trillion, two billion, five million, one hundred forty thousand, one hundred".