200121220212018 has 32 divisors (see below), whose sum is σ = 458144844702720. Its totient is φ = 57086877390480.

The previous prime is 200121220212013. The next prime is 200121220212029. The reversal of 200121220212018 is 810212022121002.

It is not an unprimeable number, because it can be changed into a prime (200121220212013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3775560628 + ... + 3775613631.

It is an arithmetic number, because the mean of its divisors is an integer number (14317026396960).

Almost surely, 2^{200121220212018} is an apocalyptic number.

200121220212018 is an abundant number, since it is smaller than the sum of its proper divisors (258023624490702).

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

200121220212018 is a wasteful number, since it uses less digits than its factorization.

200121220212018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7551174902.

The product of its (nonzero) digits is 512, while the sum is 24.

The spelling of 200121220212018 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty million, two hundred twelve thousand, eighteen".