121222110021211 has 2 divisors, whose sum is σ = 121222110021212. Its totient is φ = 121222110021210.

The previous prime is 121222110021209. The next prime is 121222110021217. The reversal of 121222110021211 is 112120011222121.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121222110021211 - 2¹ = 121222110021209 is a prime.

Together with 121222110021209, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (121222110021217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60611055010605 + 60611055010606.

It is an arithmetic number, because the mean of its divisors is an integer number (60611055010606).

Almost surely, 2^{121222110021211} is an apocalyptic number.

121222110021211 is a deficient number, since it is larger than the sum of its proper divisors (1).

121222110021211 is an equidigital number, since it uses as much as digits as its factorization.

121222110021211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 121222110021211 its reverse (112120011222121), we get a palindrome (233342121243332).

The spelling of 121222110021211 in words is "one hundred twenty-one trillion, two hundred twenty-two billion, one hundred ten million, twenty-one thousand, two hundred eleven".