121226085438 has 16 divisors (see below), whose sum is σ = 242463543696. Its totient is φ = 40406799680.

The previous prime is 121226085413. The next prime is 121226085439. The reversal of 121226085438 is 834580622121.

121226085438 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 121226085438.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121226085439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 332031 + ... + 593882.

It is an arithmetic number, because the mean of its divisors is an integer number (15153971481).

Almost surely, 2^121226085438 is an apocalyptic number.

121226085438 is an abundant number, since it is smaller than the sum of its proper divisors (121237458258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121226085438 is a wasteful number, since it uses less digits than its factorization.

121226085438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947739.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 121226085438 in words is "one hundred twenty-one billion, two hundred twenty-six million, eighty-five thousand, four hundred thirty-eight".