121968600111 has 6 divisors (see below), whose sum is σ = 176176866840. Its totient is φ = 81312400068.

The previous prime is 121968600043. The next prime is 121968600119. The reversal of 121968600111 is 111006869121.

It is a happy number.

It is not a de Polignac number, because 121968600111 - 2¹³ = 121968591919 is a prime.

It is a super-3 number, since 3×121968600111³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121968600119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6776033331 + ... + 6776033348.

It is an arithmetic number, because the mean of its divisors is an integer number (29362811140).

Almost surely, 2^121968600111 is an apocalyptic number.

121968600111 is a deficient number, since it is larger than the sum of its proper divisors (54208266729).

121968600111 is a wasteful number, since it uses less digits than its factorization.

121968600111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13552066685 (or 13552066682 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 36.

The spelling of 121968600111 in words is "one hundred twenty-one billion, nine hundred sixty-eight million, six hundred thousand, one hundred eleven".