21000201212210 has 32 divisors (see below), whose sum is σ = 41237863385472. Its totient is φ = 7636232241280.

The previous prime is 21000201212197. The next prime is 21000201212213. The reversal of 21000201212210 is 1221210200012.

It is not an unprimeable number, because it can be changed into a prime (21000201212213) 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, 1598534 + ... + 6675006.

It is an arithmetic number, because the mean of its divisors is an integer number (1288683230796).

Almost surely, 2^{21000201212210} is an apocalyptic number.

21000201212210 is a deficient number, since it is larger than the sum of its proper divisors (20237662173262).

21000201212210 is a wasteful number, since it uses less digits than its factorization.

21000201212210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5114098.

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

Adding to 21000201212210 its reverse (1221210200012), we get a palindrome (22221411412222).

The spelling of 21000201212210 in words is "twenty-one trillion, two hundred one million, two hundred twelve thousand, two hundred ten".