200121041422544 has 160 divisors (see below), whose sum is σ = 457427824459776. Its totient is φ = 83785432872960.

The previous prime is 200121041422537. The next prime is 200121041422553. The reversal of 200121041422544 is 445224140121002.

It is a self number, because there is not a number n which added to its sum of digits gives 200121041422544.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 2194673177 + ... + 2194764359.

Almost surely, 2^{200121041422544} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 200121041422544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228713912229888).

200121041422544 is an abundant number, since it is smaller than the sum of its proper divisors (257306783037232).

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

200121041422544 is a wasteful number, since it uses less digits than its factorization.

200121041422544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106873 (or 106867 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 32.

Adding to 200121041422544 its reverse (445224140121002), we get a palindrome (645345181543546).

The spelling of 200121041422544 in words is "two hundred trillion, one hundred twenty-one billion, forty-one million, four hundred twenty-two thousand, five hundred forty-four".