21120020200210 has 32 divisors (see below), whose sum is σ = 38904100532352. Its totient is φ = 8250700590720.

The previous prime is 21120020200163. The next prime is 21120020200211. The reversal of 21120020200210 is 1200202002112.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (21120020200211) 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, 1719715 + ... + 6722905.

It is an arithmetic number, because the mean of its divisors is an integer number (1215753141636).

Almost surely, 2^{21120020200210} is an apocalyptic number.

21120020200210 is a deficient number, since it is larger than the sum of its proper divisors (17784080332142).

21120020200210 is a wasteful number, since it uses less digits than its factorization.

21120020200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5013058.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 21120020200210 its reverse (1200202002112), we get a palindrome (22320222202322).

The spelling of 21120020200210 in words is "twenty-one trillion, one hundred twenty billion, twenty million, two hundred thousand, two hundred ten".