121105450023 has 32 divisors (see below), whose sum is σ = 165739827456. Its totient is φ = 78627863808.

The previous prime is 121105450021. The next prime is 121105450043. The reversal of 121105450023 is 320054501121.

It is a happy number.

It is not a de Polignac number, because 121105450023 - 2¹ = 121105450021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121105449975 and 121105450002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121105450021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24281736 + ... + 24286722.

It is an arithmetic number, because the mean of its divisors is an integer number (5179369608).

Almost surely, 2^121105450023 is an apocalyptic number.

121105450023 is a deficient number, since it is larger than the sum of its proper divisors (44634377433).

121105450023 is a wasteful number, since it uses less digits than its factorization.

121105450023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6143.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 121105450023 its reverse (320054501121), we get a palindrome (441159951144).

The spelling of 121105450023 in words is "one hundred twenty-one billion, one hundred five million, four hundred fifty thousand, twenty-three".