1121212100211 has 32 divisors (see below), whose sum is σ = 1832368227840. Its totient is φ = 595519651584.

The previous prime is 1121212100159. The next prime is 1121212100251. The reversal of 1121212100211 is 1120012121211.

It is a happy number.

It is not a de Polignac number, because 1121212100211 - 2⁶ = 1121212100147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121212100251) 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, 26488810 + ... + 26531103.

It is an arithmetic number, because the mean of its divisors is an integer number (57261507120).

Almost surely, 2^{1121212100211} is an apocalyptic number.

1121212100211 is a deficient number, since it is larger than the sum of its proper divisors (711156127629).

1121212100211 is a wasteful number, since it uses less digits than its factorization.

1121212100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53019995.

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

Adding to 1121212100211 its reverse (1120012121211), we get a palindrome (2241224221422).

The spelling of 1121212100211 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred thousand, two hundred eleven".