1221014342 has 4 divisors (see below), whose sum is σ = 1831521516. Its totient is φ = 610507170.

The previous prime is 1221014339. The next prime is 1221014357. The reversal of 1221014342 is 2434101221.

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, 305253584 + ... + 305253587.

It is an arithmetic number, because the mean of its divisors is an integer number (457880379).

Almost surely, 2^1221014342 is an apocalyptic number.

1221014342 is a deficient number, since it is larger than the sum of its proper divisors (610507174).

1221014342 is an equidigital number, since it uses as much as digits as its factorization.

1221014342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610507173.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1221014342 is about 34943.0156397527. The cubic root of 1221014342 is about 1068.8257832472.

Adding to 1221014342 its reverse (2434101221), we get a palindrome (3655115563).

The spelling of 1221014342 in words is "one billion, two hundred twenty-one million, fourteen thousand, three hundred forty-two".