121226123045 has 4 divisors (see below), whose sum is σ = 145471347660. Its totient is φ = 96980898432.

The previous prime is 121226122961. The next prime is 121226123077. The reversal of 121226123045 is 540321622121.

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

It can be written as a sum of positive squares in 2 ways, for example, as 93783550081 + 27442572964 = 306241^2 + 165658^2 .

It is a cyclic number.

It is not a de Polignac number, because 121226123045 - 2¹⁸ = 121225860901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121226122999 and 121226123017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12122612300 + ... + 12122612309.

It is an arithmetic number, because the mean of its divisors is an integer number (36367836915).

Almost surely, 2^121226123045 is an apocalyptic number.

It is an amenable number.

121226123045 is a deficient number, since it is larger than the sum of its proper divisors (24245224615).

121226123045 is an equidigital number, since it uses as much as digits as its factorization.

121226123045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24245224614.

The product of its (nonzero) digits is 5760, while the sum is 29.

Adding to 121226123045 its reverse (540321622121), we get a palindrome (661547745166).

The spelling of 121226123045 in words is "one hundred twenty-one billion, two hundred twenty-six million, one hundred twenty-three thousand, forty-five".