1210210311211 has 16 divisors (see below), whose sum is σ = 1321354884096. Its totient is φ = 1099253700000.

The previous prime is 1210210311197. The next prime is 1210210311251. The reversal of 1210210311211 is 1121130120121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1210210311211 - 2¹³ = 1210210303019 is a prime.

It is a super-2 number, since 2×1210210311211² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210210311251) 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, 96725446 + ... + 96737956.

It is an arithmetic number, because the mean of its divisors is an integer number (82584680256).

Almost surely, 2^{1210210311211} is an apocalyptic number.

1210210311211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1210210311211 is a deficient number, since it is larger than the sum of its proper divisors (111144572885).

1210210311211 is a wasteful number, since it uses less digits than its factorization.

1210210311211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19314.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1210210311211 its reverse (1121130120121), we get a palindrome (2331340431332).

The spelling of 1210210311211 in words is "one trillion, two hundred ten billion, two hundred ten million, three hundred eleven thousand, two hundred eleven".