121133021231020 has 24 divisors (see below), whose sum is σ = 254486181873168. Its totient is φ = 48432858532800.

The previous prime is 121133021231003. The next prime is 121133021231041. The reversal of 121133021231020 is 20132120331121.

It is a junction number, because it is equal to n+sod(n) for n = 121133021230982 and 121133021231000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1271823666 + ... + 1271918905.

It is an arithmetic number, because the mean of its divisors is an integer number (10603590911382).

Almost surely, 2^{121133021231020} is an apocalyptic number.

121133021231020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121133021231020 is an abundant number, since it is smaller than the sum of its proper divisors (133353160642148).

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

121133021231020 is a wasteful number, since it uses less digits than its factorization.

121133021231020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2543744961 (or 2543744959 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 121133021231020 its reverse (20132120331121), we get a palindrome (141265141562141).

The spelling of 121133021231020 in words is "one hundred twenty-one trillion, one hundred thirty-three billion, twenty-one million, two hundred thirty-one thousand, twenty".