121424443311 has 16 divisors (see below), whose sum is σ = 163531726848. Its totient is φ = 80133684000.

The previous prime is 121424443303. The next prime is 121424443313. The reversal of 121424443311 is 113344424121.

It is a happy number.

It is not a de Polignac number, because 121424443311 - 2³ = 121424443303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121424443313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1799106 + ... + 1865376.

It is an arithmetic number, because the mean of its divisors is an integer number (10220732928).

Almost surely, 2^121424443311 is an apocalyptic number.

121424443311 is a deficient number, since it is larger than the sum of its proper divisors (42107283537).

121424443311 is a wasteful number, since it uses less digits than its factorization.

121424443311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72422.

The product of its digits is 9216, while the sum is 30.

Adding to 121424443311 its reverse (113344424121), we get a palindrome (234768867432).

The spelling of 121424443311 in words is "one hundred twenty-one billion, four hundred twenty-four million, four hundred forty-three thousand, three hundred eleven".