1351221342254 has 32 divisors (see below), whose sum is σ = 2405419462656. Its totient is φ = 557058576960.

The previous prime is 1351221342241. The next prime is 1351221342257. The reversal of 1351221342254 is 4522431221531.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1351221342257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9249119 + ... + 9394074.

It is an arithmetic number, because the mean of its divisors is an integer number (75169358208).

Almost surely, 2^{1351221342254} is an apocalyptic number.

1351221342254 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1351221342254 is a deficient number, since it is larger than the sum of its proper divisors (1054198120402).

1351221342254 is a wasteful number, since it uses less digits than its factorization.

1351221342254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18643400.

The product of its digits is 57600, while the sum is 35.

Adding to 1351221342254 its reverse (4522431221531), we get a palindrome (5873652563785).

The spelling of 1351221342254 in words is "one trillion, three hundred fifty-one billion, two hundred twenty-one million, three hundred forty-two thousand, two hundred fifty-four".