121023143 has 2 divisors, whose sum is σ = 121023144. Its totient is φ = 121023142.

The previous prime is 121023083. The next prime is 121023157. The reversal of 121023143 is 341320121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 121023143 - 2¹² = 121019047 is a prime.

It is a super-2 number, since 2×121023143² = 29293202283196898, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121020143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60511571 + 60511572.

It is an arithmetic number, because the mean of its divisors is an integer number (60511572).

Almost surely, 2^121023143 is an apocalyptic number.

121023143 is a deficient number, since it is larger than the sum of its proper divisors (1).

121023143 is an equidigital number, since it uses as much as digits as its factorization.

121023143 is an evil number, because the sum of its binary digits is even.

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

The square root of 121023143 is about 11001.0519042499. The cubic root of 121023143 is about 494.6402760066.

Adding to 121023143 its reverse (341320121), we get a palindrome (462343264).

The spelling of 121023143 in words is "one hundred twenty-one million, twenty-three thousand, one hundred forty-three".