21211210010210 has 32 divisors (see below), whose sum is σ = 41652723312000. Its totient is φ = 7712867272960.

The previous prime is 21211210010203. The next prime is 21211210010257. The reversal of 21211210010210 is 1201001211212.

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, 899255 + ... + 6575034.

It is an arithmetic number, because the mean of its divisors is an integer number (1301647603500).

Almost surely, 2^{21211210010210} is an apocalyptic number.

21211210010210 is a deficient number, since it is larger than the sum of its proper divisors (20441513301790).

21211210010210 is a wasteful number, since it uses less digits than its factorization.

21211210010210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500106.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21211210010210 its reverse (1201001211212), we get a palindrome (22412211221422).

The spelling of 21211210010210 in words is "twenty-one trillion, two hundred eleven billion, two hundred ten million, ten thousand, two hundred ten".