121122222022211 has 4 divisors (see below), whose sum is σ = 121129189894512. Its totient is φ = 121115254149912.

The previous prime is 121122222022201. The next prime is 121122222022273. The reversal of 121122222022211 is 112220222221121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121122222022211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121122222022201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3483910076 + ... + 3483944841.

It is an arithmetic number, because the mean of its divisors is an integer number (30282297473628).

Almost surely, 2^{121122222022211} is an apocalyptic number.

121122222022211 is a deficient number, since it is larger than the sum of its proper divisors (6967872301).

121122222022211 is an equidigital number, since it uses as much as digits as its factorization.

121122222022211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6967872300.

The product of its (nonzero) digits is 512, while the sum is 23.

Adding to 121122222022211 its reverse (112220222221121), we get a palindrome (233342444243332).

The spelling of 121122222022211 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, two hundred twenty-two million, twenty-two thousand, two hundred eleven".