121012221112211 has 32 divisors (see below), whose sum is σ = 144043297187328. Its totient is φ = 100212123536640.

The previous prime is 121012221112207. The next prime is 121012221112213. The reversal of 121012221112211 is 112211122210121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121012221112211 - 2² = 121012221112207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121012221112213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4780535 + ... + 16275071.

It is an arithmetic number, because the mean of its divisors is an integer number (4501353037104).

Almost surely, 2^{121012221112211} is an apocalyptic number.

121012221112211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121012221112211 is a deficient number, since it is larger than the sum of its proper divisors (23031076075117).

121012221112211 is a wasteful number, since it uses less digits than its factorization.

121012221112211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11495531.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 121012221112211 its reverse (112211122210121), we get a palindrome (233223343322332).

The spelling of 121012221112211 in words is "one hundred twenty-one trillion, twelve billion, two hundred twenty-one million, one hundred twelve thousand, two hundred eleven".