121002211211 has 4 divisors (see below), whose sum is σ = 138288241392. Its totient is φ = 103716181032.

The previous prime is 121002211207. The next prime is 121002211237. The reversal of 121002211211 is 112112200121.

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 121002211211 - 2² = 121002211207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121002211271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8643015080 + ... + 8643015093.

It is an arithmetic number, because the mean of its divisors is an integer number (34572060348).

Almost surely, 2^121002211211 is an apocalyptic number.

121002211211 is a deficient number, since it is larger than the sum of its proper divisors (17286030181).

121002211211 is an equidigital number, since it uses as much as digits as its factorization.

121002211211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17286030180.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121002211211 its reverse (112112200121), we get a palindrome (233114411332).

The spelling of 121002211211 in words is "one hundred twenty-one billion, two million, two hundred eleven thousand, two hundred eleven".