121343542023 has 16 divisors (see below), whose sum is σ = 178213291776. Its totient is φ = 72827543040.

The previous prime is 121343541911. The next prime is 121343542127. The reversal of 121343542023 is 320245343121.

It is not a de Polignac number, because 121343542023 - 2¹⁸ = 121343279879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121343542423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17846490 + ... + 17853287.

It is an arithmetic number, because the mean of its divisors is an integer number (11138330736).

Almost surely, 2^121343542023 is an apocalyptic number.

121343542023 is a deficient number, since it is larger than the sum of its proper divisors (56869749753).

121343542023 is a wasteful number, since it uses less digits than its factorization.

121343542023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35699894.

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 121343542023 its reverse (320245343121), we get a palindrome (441588885144).

It can be divided in two parts, 121343 and 542023, that added together give a palindrome (663366).

The spelling of 121343542023 in words is "one hundred twenty-one billion, three hundred forty-three million, five hundred forty-two thousand, twenty-three".