21000201020210 has 32 divisors (see below), whose sum is σ = 39468836787840. Its totient is φ = 8029770807168.

The previous prime is 21000201020207. The next prime is 21000201020251. The reversal of 21000201020210 is 1202010200012.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 21000201020191 and 21000201020200.

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, 28549187 + ... + 29275526.

It is an arithmetic number, because the mean of its divisors is an integer number (1233401149620).

Almost surely, 2^{21000201020210} is an apocalyptic number.

21000201020210 is a deficient number, since it is larger than the sum of its proper divisors (18468635767630).

21000201020210 is a wasteful number, since it uses less digits than its factorization.

21000201020210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57826322.

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

Adding to 21000201020210 its reverse (1202010200012), we get a palindrome (22202211220222).

The spelling of 21000201020210 in words is "twenty-one trillion, two hundred one million, twenty thousand, two hundred ten".