200121221021000 has 64 divisors (see below), whose sum is σ = 468294388848000. Its totient is φ = 80046653937600.

The previous prime is 200121221020969. The next prime is 200121221021077. The reversal of 200121221021000 is 120122121002.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41787941 + ... + 46330059.

It is an arithmetic number, because the mean of its divisors is an integer number (7317099825750).

Almost surely, 2^{200121221021000} is an apocalyptic number.

200121221021000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

200121221021000 is an abundant number, since it is smaller than the sum of its proper divisors (268173167827000).

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

200121221021000 is a wasteful number, since it uses less digits than its factorization.

200121221021000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4586199 (or 4586185 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 200121221021000 its reverse (120122121002), we get a palindrome (200241343142002).

The spelling of 200121221021000 in words is "two hundred trillion, one hundred twenty-one billion, two hundred twenty-one million, twenty-one thousand".