121230021111 has 8 divisors (see below), whose sum is σ = 162080465664. Its totient is φ = 80599795320.

The previous prime is 121230021083. The next prime is 121230021119. The reversal of 121230021111 is 111120032121.

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

It is not a de Polignac number, because 121230021111 - 2⁶ = 121230021047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121230021119) 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, 55053405 + ... + 55055606.

It is an arithmetic number, because the mean of its divisors is an integer number (20260058208).

Almost surely, 2^121230021111 is an apocalyptic number.

121230021111 is a deficient number, since it is larger than the sum of its proper divisors (40850444553).

121230021111 is a wasteful number, since it uses less digits than its factorization.

121230021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110109381.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 121230021111 its reverse (111120032121), we get a palindrome (232350053232).

The spelling of 121230021111 in words is "one hundred twenty-one billion, two hundred thirty million, twenty-one thousand, one hundred eleven".