121211320424422 has 4 divisors (see below), whose sum is σ = 181816980636636. Its totient is φ = 60605660212210.

The previous prime is 121211320424419. The next prime is 121211320424423. The reversal of 121211320424422 is 224424023112121.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211320424423) 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 as a sum of consecutive naturals, namely, 30302830106104 + ... + 30302830106107.

It is an arithmetic number, because the mean of its divisors is an integer number (45454245159159).

Almost surely, 2^{121211320424422} is an apocalyptic number.

121211320424422 is a deficient number, since it is larger than the sum of its proper divisors (60605660212214).

121211320424422 is an equidigital number, since it uses as much as digits as its factorization.

121211320424422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60605660212213.

The product of its (nonzero) digits is 12288, while the sum is 31.

Adding to 121211320424422 its reverse (224424023112121), we get a palindrome (345635343536543).

The spelling of 121211320424422 in words is "one hundred twenty-one trillion, two hundred eleven billion, three hundred twenty million, four hundred twenty-four thousand, four hundred twenty-two".