20001121200210 has 32 divisors (see below), whose sum is σ = 49657956085440. Its totient is φ = 5149713963968.

The previous prime is 20001121200107. The next prime is 20001121200217. The reversal of 20001121200210 is 1200212110002.

It is not an unprimeable number, because it can be changed into a prime (20001121200217) 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, 11494896372 + ... + 11494898111.

It is an arithmetic number, because the mean of its divisors is an integer number (1551811127670).

Almost surely, 2^{20001121200210} is an apocalyptic number.

20001121200210 is an abundant number, since it is smaller than the sum of its proper divisors (29656834885230).

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

20001121200210 is a wasteful number, since it uses less digits than its factorization.

20001121200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22989794522.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20001121200210 its reverse (1200212110002), we get a palindrome (21201333310212).

The spelling of 20001121200210 in words is "twenty trillion, one billion, one hundred twenty-one million, two hundred thousand, two hundred ten".