121101200000 has 384 divisors, whose sum is σ = 348530817600. Its totient is φ = 41420800000.

The previous prime is 121101199997. The next prime is 121101200009. The reversal of 121101200000 is 2101121.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is not an unprimeable number, because it can be changed into a prime (121101200009) 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, 74799191 + ... + 74800809.

Almost surely, 2^121101200000 is an apocalyptic number.

121101200000 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 121101200000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174265408800).

121101200000 is an abundant number, since it is smaller than the sum of its proper divisors (227429617600).

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

121101200000 is an equidigital number, since it uses as much as digits as its factorization.

121101200000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686 (or 1654 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121101200000 its reverse (2101121), we get a palindrome (121103301121).

The spelling of 121101200000 in words is "one hundred twenty-one billion, one hundred one million, two hundred thousand".