1210211201211 has 32 divisors (see below), whose sum is σ = 1665552284928. Its totient is φ = 781141916160.

The previous prime is 1210211201203. The next prime is 1210211201231. The reversal of 1210211201211 is 1121021120121.

It is a happy number.

It is not a de Polignac number, because 1210211201211 - 2³ = 1210211201203 is a prime.

It is a super-2 number, since 2×1210211201211² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1210211201231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 66097320 + ... + 66115626.

It is an arithmetic number, because the mean of its divisors is an integer number (52048508904).

Almost surely, 2^{1210211201211} is an apocalyptic number.

1210211201211 is a deficient number, since it is larger than the sum of its proper divisors (455341083717).

1210211201211 is a wasteful number, since it uses less digits than its factorization.

1210211201211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22411.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1210211201211 its reverse (1121021120121), we get a palindrome (2331232321332).

The spelling of 1210211201211 in words is "one trillion, two hundred ten billion, two hundred eleven million, two hundred one thousand, two hundred eleven".