121321421342 has 8 divisors (see below), whose sum is σ = 198525962232. Its totient is φ = 55146100600.

The previous prime is 121321421327. The next prime is 121321421369. The reversal of 121321421342 is 243124123121.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2757305009 + ... + 2757305052.

It is an arithmetic number, because the mean of its divisors is an integer number (24815745279).

Almost surely, 2^121321421342 is an apocalyptic number.

121321421342 is a deficient number, since it is larger than the sum of its proper divisors (77204540890).

121321421342 is a wasteful number, since it uses less digits than its factorization.

121321421342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514610074.

The product of its digits is 2304, while the sum is 26.

Adding to 121321421342 its reverse (243124123121), we get a palindrome (364445544463).

The spelling of 121321421342 in words is "one hundred twenty-one billion, three hundred twenty-one million, four hundred twenty-one thousand, three hundred forty-two".