121001320 has 32 divisors (see below), whose sum is σ = 297004320. Its totient is φ = 44000320.

The previous prime is 121001299. The next prime is 121001341. The reversal of 121001320 is 23100121.

It is an interprime number because it is at equal distance from previous prime (121001299) and next prime (121001341).

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 121001297 and 121001306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137062 + ... + 137941.

It is an arithmetic number, because the mean of its divisors is an integer number (9281385).

Almost surely, 2^121001320 is an apocalyptic number.

121001320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001320 is an abundant number, since it is smaller than the sum of its proper divisors (176003000).

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

121001320 is a wasteful number, since it uses less digits than its factorization.

121001320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275025 (or 275021 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 10.

The square root of 121001320 is about 11000.0599998364. The cubic root of 121001320 is about 494.6105428956.

Adding to 121001320 its reverse (23100121), we get a palindrome (144101441).

The spelling of 121001320 in words is "one hundred twenty-one million, one thousand, three hundred twenty".