200000121220100 has 72 divisors (see below), whose sum is σ = 439236395300640. Its totient is φ = 79034894484480.

The previous prime is 200000121220093. The next prime is 200000121220103. The reversal of 200000121220100 is 1022121000002.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (200000121220103) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 623742419 + ... + 624062981.

Almost surely, 2^{200000121220100} is an apocalyptic number.

200000121220100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200000121220100 is an abundant number, since it is smaller than the sum of its proper divisors (239236274080540).

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

200000121220100 is a wasteful number, since it uses less digits than its factorization.

200000121220100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395829 (or 395822 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 200000121220100 its reverse (1022121000002), we get a palindrome (201022242220102).

The spelling of 200000121220100 in words is "two hundred trillion, one hundred twenty-one million, two hundred twenty thousand, one hundred".