200121451 has 8 divisors (see below), whose sum is σ = 208479600. Its totient is φ = 191928960.

The previous prime is 200121421. The next prime is 200121479. The reversal of 200121451 is 154121002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 200121451 - 2¹³ = 200113259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200121401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38946 + ... + 43783.

It is an arithmetic number, because the mean of its divisors is an integer number (26059950).

Almost surely, 2^200121451 is an apocalyptic number.

200121451 is a deficient number, since it is larger than the sum of its proper divisors (8358149).

200121451 is an equidigital number, since it uses as much as digits as its factorization.

200121451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82829.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 200121451 is about 14146.4289133336. The cubic root of 200121451 is about 584.9218986488.

Adding to 200121451 its reverse (154121002), we get a palindrome (354242453).

The spelling of 200121451 in words is "two hundred million, one hundred twenty-one thousand, four hundred fifty-one".