121110211231 has 16 divisors (see below), whose sum is σ = 127092913920. Its totient is φ = 115304713920.

The previous prime is 121110211223. The next prime is 121110211237. The reversal of 121110211231 is 132112011121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121110211231 - 2³ = 121110211223 is a prime.

It is a super-2 number, since 2×121110211231² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121110211237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87910 + ... + 499948.

It is an arithmetic number, because the mean of its divisors is an integer number (7943307120).

Almost surely, 2^121110211231 is an apocalyptic number.

121110211231 is a deficient number, since it is larger than the sum of its proper divisors (5982702689).

121110211231 is a wasteful number, since it uses less digits than its factorization.

121110211231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 412254.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 121110211231 its reverse (132112011121), we get a palindrome (253222222352).

The spelling of 121110211231 in words is "one hundred twenty-one billion, one hundred ten million, two hundred eleven thousand, two hundred thirty-one".