121110021230111 has 4 divisors (see below), whose sum is σ = 121110461484672. Its totient is φ = 121109580975552.

The previous prime is 121110021230089. The next prime is 121110021230117. The reversal of 121110021230111 is 111032120011121.

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

It is a cyclic number.

It is not a de Polignac number, because 121110021230111 - 2⁴² = 116711974719007 is a prime.

It is a super-2 number, since 2×121110021230111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121110021230111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110021230117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 219714386 + ... + 220264911.

It is an arithmetic number, because the mean of its divisors is an integer number (30277615371168).

Almost surely, 2^{121110021230111} is an apocalyptic number.

121110021230111 is a deficient number, since it is larger than the sum of its proper divisors (440254561).

121110021230111 is an equidigital number, since it uses as much as digits as its factorization.

121110021230111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440254560.

The product of its (nonzero) digits is 24, while the sum is 17.

Adding to 121110021230111 its reverse (111032120011121), we get a palindrome (232142141241232).

The spelling of 121110021230111 in words is "one hundred twenty-one trillion, one hundred ten billion, twenty-one million, two hundred thirty thousand, one hundred eleven".