121020121343 has 8 divisors (see below), whose sum is σ = 132024622080. Its totient is φ = 110016065880.

The previous prime is 121020121337. The next prime is 121020121379. The reversal of 121020121343 is 343121020121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121020121343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020121043) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 740228 + ... + 888806.

It is an arithmetic number, because the mean of its divisors is an integer number (16503077760).

Almost surely, 2^121020121343 is an apocalyptic number.

121020121343 is a deficient number, since it is larger than the sum of its proper divisors (11004500737).

121020121343 is a wasteful number, since it uses less digits than its factorization.

121020121343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222637.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 121020121343 its reverse (343121020121), we get a palindrome (464141141464).

The spelling of 121020121343 in words is "one hundred twenty-one billion, twenty million, one hundred twenty-one thousand, three hundred forty-three".