211211211022210 has 16 divisors (see below), whose sum is σ = 434491634102976. Its totient is φ = 72415272350448.

The previous prime is 211211211022199. The next prime is 211211211022243. The reversal of 211211211022210 is 12220112112112.

It is a happy number.

It is a super-2 number, since 2×211211211022210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1508651507232 + ... + 1508651507371.

It is an arithmetic number, because the mean of its divisors is an integer number (27155727131436).

Almost surely, 2^{211211211022210} is an apocalyptic number.

211211211022210 is an abundant number, since it is smaller than the sum of its proper divisors (223280423080766).

211211211022210 is a wasteful number, since it uses less digits than its factorization.

211211211022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3017303014617.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 211211211022210 its reverse (12220112112112), we get a palindrome (223431323134322).

The spelling of 211211211022210 in words is "two hundred eleven trillion, two hundred eleven billion, two hundred eleven million, twenty-two thousand, two hundred ten".