1020121343 has 4 divisors (see below), whose sum is σ = 1073811960. Its totient is φ = 966430728.

The previous prime is 1020121307. The next prime is 1020121367. The reversal of 1020121343 is 3431210201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1020121343 - 2¹⁰ = 1020120319 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020121393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26845280 + ... + 26845317.

It is an arithmetic number, because the mean of its divisors is an integer number (268452990).

Almost surely, 2^1020121343 is an apocalyptic number.

1020121343 is a deficient number, since it is larger than the sum of its proper divisors (53690617).

1020121343 is an equidigital number, since it uses as much as digits as its factorization.

1020121343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53690616.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 1020121343 is about 31939.3384872010. The cubic root of 1020121343 is about 1006.6626251732.

Adding to 1020121343 its reverse (3431210201), we get a palindrome (4451331544).

The spelling of 1020121343 in words is "one billion, twenty million, one hundred twenty-one thousand, three hundred forty-three".