121100212110211 has 4 divisors (see below), whose sum is σ = 122231989793592. Its totient is φ = 119968434426832.

The previous prime is 121100212110203. The next prime is 121100212110217. The reversal of 121100212110211 is 112011212001121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121100212110211 - 2³ = 121100212110203 is a prime.

It is a super-2 number, since 2×121100212110211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100212110217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 565888841530 + ... + 565888841743.

It is an arithmetic number, because the mean of its divisors is an integer number (30557997448398).

Almost surely, 2^{121100212110211} is an apocalyptic number.

121100212110211 is a deficient number, since it is larger than the sum of its proper divisors (1131777683381).

121100212110211 is a wasteful number, since it uses less digits than its factorization.

121100212110211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1131777683380.

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

Adding to 121100212110211 its reverse (112011212001121), we get a palindrome (233111424111332).

The spelling of 121100212110211 in words is "one hundred twenty-one trillion, one hundred billion, two hundred twelve million, one hundred ten thousand, two hundred eleven".