200400254121 has 8 divisors (see below), whose sum is σ = 278817744960. Its totient is φ = 127791466352.

The previous prime is 200400254111. The next prime is 200400254183. The reversal of 200400254121 is 121452004002.

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 200400254121 - 2¹⁸ = 200399991977 is a prime.

It is a super-2 number, since 2×200400254121² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (200400254101) 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, 1452175686 + ... + 1452175823.

It is an arithmetic number, because the mean of its divisors is an integer number (34852218120).

Almost surely, 2^200400254121 is an apocalyptic number.

It is an amenable number.

200400254121 is a deficient number, since it is larger than the sum of its proper divisors (78417490839).

200400254121 is a wasteful number, since it uses less digits than its factorization.

200400254121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904351535.

The product of its (nonzero) digits is 640, while the sum is 21.

Adding to 200400254121 its reverse (121452004002), we get a palindrome (321852258123).

The spelling of 200400254121 in words is "two hundred billion, four hundred million, two hundred fifty-four thousand, one hundred twenty-one".