1121620334551 has 2 divisors, whose sum is σ = 1121620334552. Its totient is φ = 1121620334550.

The previous prime is 1121620334537. The next prime is 1121620334557. The reversal of 1121620334551 is 1554330261211.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1121620334551 - 2³³ = 1113030399959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1121620334557) 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 as a sum of consecutive naturals, namely, 560810167275 + 560810167276.

It is an arithmetic number, because the mean of its divisors is an integer number (560810167276).

Almost surely, 2^{1121620334551} is an apocalyptic number.

1121620334551 is a deficient number, since it is larger than the sum of its proper divisors (1).

1121620334551 is an equidigital number, since it uses as much as digits as its factorization.

1121620334551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21600, while the sum is 34.

Adding to 1121620334551 its reverse (1554330261211), we get a palindrome (2675950595762).

The spelling of 1121620334551 in words is "one trillion, one hundred twenty-one billion, six hundred twenty million, three hundred thirty-four thousand, five hundred fifty-one".