121101302121020 has 48 divisors (see below), whose sum is σ = 273929910246048. Its totient is φ = 44705403221760.

The previous prime is 121101302120963. The next prime is 121101302121029. The reversal of 121101302121020 is 20121203101121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121101302121020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121101302121029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45172319 + ... + 47778038.

It is an arithmetic number, because the mean of its divisors is an integer number (5706873130126).

Almost surely, 2^{121101302121020} is an apocalyptic number.

121101302121020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121101302121020 is an abundant number, since it is smaller than the sum of its proper divisors (152828608125028).

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

121101302121020 is a wasteful number, since it uses less digits than its factorization.

121101302121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92955390 (or 92955388 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 121101302121020 its reverse (20121203101121), we get a palindrome (141222505222141).

The spelling of 121101302121020 in words is "one hundred twenty-one trillion, one hundred one billion, three hundred two million, one hundred twenty-one thousand, twenty".