200202121 has 4 divisors (see below), whose sum is σ = 228802432. Its totient is φ = 171601812.

The previous prime is 200202113. The next prime is 200202127. The reversal of 200202121 is 121202002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200202121 - 2³ = 200202113 is a prime.

It is a super-7 number, since 7×200202121⁷ (a number of 59 digits) contains 7777777 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200202098 and 200202107.

It is not an unprimeable number, because it can be changed into a prime (200202127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14300145 + ... + 14300158.

It is an arithmetic number, because the mean of its divisors is an integer number (57200608).

Almost surely, 2^200202121 is an apocalyptic number.

It is an amenable number.

200202121 is a deficient number, since it is larger than the sum of its proper divisors (28600311).

200202121 is an equidigital number, since it uses as much as digits as its factorization.

200202121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28600310.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 200202121 is about 14149.2798756686. The cubic root of 200202121 is about 585.0004831126. Note that the first 3 decimals are identical.

Adding to 200202121 its reverse (121202002), we get a palindrome (321404123).

The spelling of 200202121 in words is "two hundred million, two hundred two thousand, one hundred twenty-one".