243122121221342 has 24 divisors (see below), whose sum is σ = 400998958938648. Its totient is φ = 110469018764720.

The previous prime is 243122121221293. The next prime is 243122121221381.

It is a happy number.

243122121221342 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 243122121221299 and 243122121221308.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185875748 + ... + 187179159.

It is an arithmetic number, because the mean of its divisors is an integer number (16708289955777).

Almost surely, 2^{243122121221342} is an apocalyptic number.

243122121221342 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

243122121221342 is a deficient number, since it is larger than the sum of its proper divisors (157876837717306).

243122121221342 is a wasteful number, since it uses less digits than its factorization.

243122121221342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373057624 (or 373057613 counting only the distinct ones).

The product of its digits is 18432, while the sum is 32.

The spelling of 243122121221342 in words is "two hundred forty-three trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred twenty-one thousand, three hundred forty-two".