200121674345 has 16 divisors (see below), whose sum is σ = 241027488000. Its totient is φ = 159510593088.

The previous prime is 200121674321. The next prime is 200121674477. The reversal of 200121674345 is 543476121002.

200121674345 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 200121674345 - 2¹² = 200121670249 is a prime.

It is a super-3 number, since 3×200121674345³ (a number of 35 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1731476 + ... + 1843434.

It is an arithmetic number, because the mean of its divisors is an integer number (15064218000).

Almost surely, 2^200121674345 is an apocalyptic number.

It is an amenable number.

200121674345 is a deficient number, since it is larger than the sum of its proper divisors (40905813655).

200121674345 is a wasteful number, since it uses less digits than its factorization.

200121674345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113272.

The product of its (nonzero) digits is 40320, while the sum is 35.

Adding to 200121674345 its reverse (543476121002), we get a palindrome (743597795347).

The spelling of 200121674345 in words is "two hundred billion, one hundred twenty-one million, six hundred seventy-four thousand, three hundred forty-five".