121423300105 has 16 divisors (see below), whose sum is σ = 158041923984. Its totient is φ = 89194731520.

The previous prime is 121423300093. The next prime is 121423300147. The reversal of 121423300105 is 501003324121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2044757961 + 119378542144 = 45219^2 + 345512^2 .

It is not a de Polignac number, because 121423300105 - 2²¹ = 121421202953 is a prime.

It is a super-2 number, since 2×121423300105² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17417362 + ... + 17424331.

It is an arithmetic number, because the mean of its divisors is an integer number (9877620249).

Almost surely, 2^121423300105 is an apocalyptic number.

It is an amenable number.

121423300105 is a deficient number, since it is larger than the sum of its proper divisors (36618623879).

121423300105 is a wasteful number, since it uses less digits than its factorization.

121423300105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34841756.

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 121423300105 its reverse (501003324121), we get a palindrome (622426624226).

The spelling of 121423300105 in words is "one hundred twenty-one billion, four hundred twenty-three million, three hundred thousand, one hundred five".