121105523 has 8 divisors (see below), whose sum is σ = 150988800. Its totient is φ = 94367880.

The previous prime is 121105469. The next prime is 121105529. The reversal of 121105523 is 325501121.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121105523 - 2⁶ = 121105459 is a prime.

It is a super-2 number, since 2×121105523² = 29333095402207058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121105495 and 121105504.

It is not an unprimeable number, because it can be changed into a prime (121105529) 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, 786323 + ... + 786476.

It is an arithmetic number, because the mean of its divisors is an integer number (18873600).

Almost surely, 2^121105523 is an apocalyptic number.

121105523 is a deficient number, since it is larger than the sum of its proper divisors (29883277).

121105523 is a wasteful number, since it uses less digits than its factorization.

121105523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572817.

The product of its (nonzero) digits is 300, while the sum is 20.

The square root of 121105523 is about 11004.7954547097. The cubic root of 121105523 is about 494.7524838115.

Adding to 121105523 its reverse (325501121), we get a palindrome (446606644).

The spelling of 121105523 in words is "one hundred twenty-one million, one hundred five thousand, five hundred twenty-three".