121010823 has 12 divisors (see below), whose sum is σ = 180821160. Its totient is φ = 77891856.

The previous prime is 121010801. The next prime is 121010837. The reversal of 121010823 is 328010121.

It is not a de Polignac number, because 121010823 - 2¹³ = 121002631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121010796 and 121010805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121010873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 231561 + ... + 232082.

It is an arithmetic number, because the mean of its divisors is an integer number (15068430).

Almost surely, 2^121010823 is an apocalyptic number.

121010823 is a deficient number, since it is larger than the sum of its proper divisors (59810337).

121010823 is a wasteful number, since it uses less digits than its factorization.

121010823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463678 (or 463675 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 121010823 is about 11000.4919435451. The cubic root of 121010823 is about 494.6234908561.

Adding to 121010823 its reverse (328010121), we get a palindrome (449020944).

The spelling of 121010823 in words is "one hundred twenty-one million, ten thousand, eight hundred twenty-three".