121120191288 has 48 divisors (see below), whose sum is σ = 328051927320. Its totient is φ = 40371172416.

The previous prime is 121120191281. The next prime is 121120191289. The reversal of 121120191288 is 882191021121.

It is a happy number.

It is a super-2 number, since 2×121120191288² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121120191281) 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 11 ways as a sum of consecutive naturals, for example, 1748970 + ... + 1816902.

Almost surely, 2^121120191288 is an apocalyptic number.

121120191288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121120191288 is an abundant number, since it is smaller than the sum of its proper divisors (206931736032).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121120191288 is a wasteful number, since it uses less digits than its factorization.

121120191288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92708 (or 92701 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 36.

The spelling of 121120191288 in words is "one hundred twenty-one billion, one hundred twenty million, one hundred ninety-one thousand, two hundred eighty-eight".