121112201101211 has 4 divisors (see below), whose sum is σ = 121113545553000. Its totient is φ = 121110856649424.

The previous prime is 121112201101207. The next prime is 121112201101219. The reversal of 121112201101211 is 112101102211121.

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 121112201101211 - 2² = 121112201101207 is a prime.

It is a super-2 number, since 2×121112201101211² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121112201101211.

It is not an unprimeable number, because it can be changed into a prime (121112201101219) 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, 672090761 + ... + 672270938.

It is an arithmetic number, because the mean of its divisors is an integer number (30278386388250).

Almost surely, 2^{121112201101211} is an apocalyptic number.

121112201101211 is a deficient number, since it is larger than the sum of its proper divisors (1344451789).

121112201101211 is an equidigital number, since it uses as much as digits as its factorization.

121112201101211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1344451788.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 121112201101211 its reverse (112101102211121), we get a palindrome (233213303312332).

The spelling of 121112201101211 in words is "one hundred twenty-one trillion, one hundred twelve billion, two hundred one million, one hundred one thousand, two hundred eleven".