121232100142320 has 80 divisors (see below), whose sum is σ = 375936627042720. Its totient is φ = 32318485491712.

The previous prime is 121232100142313. The next prime is 121232100142339. The reversal of 121232100142320 is 23241001232121.

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

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

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, 77935629 + ... + 79475948.

It is an arithmetic number, because the mean of its divisors is an integer number (4699207838034).

Almost surely, 2^{121232100142320} is an apocalyptic number.

121232100142320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121232100142320 is an abundant number, since it is smaller than the sum of its proper divisors (254704526900400).

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

121232100142320 is a wasteful number, since it uses less digits than its factorization.

121232100142320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157414802 (or 157414796 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

Adding to 121232100142320 its reverse (23241001232121), we get a palindrome (144473101374441).

The spelling of 121232100142320 in words is "one hundred twenty-one trillion, two hundred thirty-two billion, one hundred million, one hundred forty-two thousand, three hundred twenty".