121001021111120 has 80 divisors (see below), whose sum is σ = 291234551462400. Its totient is φ = 46704895142400.

The previous prime is 121001021111029. The next prime is 121001021111129. The reversal of 121001021111120 is 21111120100121.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 121001021111095 and 121001021111104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001021111129) 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, 69035246 + ... + 70766285.

It is an arithmetic number, because the mean of its divisors is an integer number (3640431893280).

Almost surely, 2^{121001021111120} is an apocalyptic number.

121001021111120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001021111120 is an abundant number, since it is smaller than the sum of its proper divisors (170233530351280).

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

121001021111120 is a wasteful number, since it uses less digits than its factorization.

121001021111120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139801924 (or 139801918 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 121001021111120 its reverse (21111120100121), we get a palindrome (142112141211241).

The spelling of 121001021111120 in words is "one hundred twenty-one trillion, one billion, twenty-one million, one hundred eleven thousand, one hundred twenty".