1142220312551 has 4 divisors (see below), whose sum is σ = 1156678797600. Its totient is φ = 1127761827504.

The previous prime is 1142220312539. The next prime is 1142220312553. The reversal of 1142220312551 is 1552130222411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142220312551 - 2¹⁰ = 1142220311527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142220312553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7229242406 + ... + 7229242563.

It is an arithmetic number, because the mean of its divisors is an integer number (289169699400).

Almost surely, 2^{1142220312551} is an apocalyptic number.

1142220312551 is a deficient number, since it is larger than the sum of its proper divisors (14458485049).

1142220312551 is an equidigital number, since it uses as much as digits as its factorization.

1142220312551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14458485048.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 1142220312551 its reverse (1552130222411), we get a palindrome (2694350534962).

The spelling of 1142220312551 in words is "one trillion, one hundred forty-two billion, two hundred twenty million, three hundred twelve thousand, five hundred fifty-one".