121001200 has 60 divisors (see below), whose sum is σ = 291844168. Its totient is φ = 48211200.

The previous prime is 121001197. The next prime is 121001203. The reversal of 121001200 is 2100121.

It is an interprime number because it is at equal distance from previous prime (121001197) and next prime (121001203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 148795 + ... + 149605.

Almost surely, 2^121001200 is an apocalyptic number.

121001200 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 121001200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145922084).

121001200 is an abundant number, since it is smaller than the sum of its proper divisors (170842968).

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

121001200 is a wasteful number, since it uses less digits than its factorization.

121001200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1202 (or 1191 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 7.

The square root of 121001200 is about 11000.0545453193. The cubic root of 121001200 is about 494.6103793897.

Adding to 121001200 its reverse (2100121), we get a palindrome (123101321).

The spelling of 121001200 in words is "one hundred twenty-one million, one thousand, two hundred".