121222112121211 has 4 divisors (see below), whose sum is σ = 121226059854792. Its totient is φ = 121218164387632.

The previous prime is 121222112121179. The next prime is 121222112121221. The reversal of 121222112121211 is 112121211222121.

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 121222112121211 - 2⁵ = 121222112121179 is a prime.

It is a super-2 number, since 2×121222112121211² (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 (121222112121221) 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, 1973820730 + ... + 1973882143.

It is an arithmetic number, because the mean of its divisors is an integer number (30306514963698).

Almost surely, 2^{121222112121211} is an apocalyptic number.

121222112121211 is a deficient number, since it is larger than the sum of its proper divisors (3947733581).

121222112121211 is an equidigital number, since it uses as much as digits as its factorization.

121222112121211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3947733580.

The product of its digits is 128, while the sum is 22.

Adding to 121222112121211 its reverse (112121211222121), we get a palindrome (233343323343332).

The spelling of 121222112121211 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, two hundred eleven".