123221021342 has 4 divisors (see below), whose sum is σ = 184831532016. Its totient is φ = 61610510670.

The previous prime is 123221021327. The next prime is 123221021359. The reversal of 123221021342 is 243120122321.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30805255334 + ... + 30805255337.

It is an arithmetic number, because the mean of its divisors is an integer number (46207883004).

Almost surely, 2^123221021342 is an apocalyptic number.

123221021342 is a deficient number, since it is larger than the sum of its proper divisors (61610510674).

123221021342 is an equidigital number, since it uses as much as digits as its factorization.

123221021342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61610510673.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 123221021342 its reverse (243120122321), we get a palindrome (366341143663).

The spelling of 123221021342 in words is "one hundred twenty-three billion, two hundred twenty-one million, twenty-one thousand, three hundred forty-two".