121011101320 has 64 divisors (see below), whose sum is σ = 273748734000. Its totient is φ = 48143155200.

The previous prime is 121011101311. The next prime is 121011101333. The reversal of 121011101320 is 23101110121.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 86166905764 + 34844195556 = 293542^2 + 186666^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 121011101320.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5587152 + ... + 5608768.

Almost surely, 2^121011101320 is an apocalyptic number.

121011101320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121011101320 is an abundant number, since it is smaller than the sum of its proper divisors (152737632680).

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

121011101320 is a wasteful number, since it uses less digits than its factorization.

121011101320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22378 (or 22374 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 121011101320 its reverse (23101110121), we get a palindrome (144112211441).

The spelling of 121011101320 in words is "one hundred twenty-one billion, eleven million, one hundred one thousand, three hundred twenty".