1421120551511 has 2 divisors, whose sum is σ = 1421120551512. Its totient is φ = 1421120551510.

The previous prime is 1421120551471. The next prime is 1421120551517. The reversal of 1421120551511 is 1151550211241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1421120551511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1421120551517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710560275755 + 710560275756.

It is an arithmetic number, because the mean of its divisors is an integer number (710560275756).

Almost surely, 2^{1421120551511} is an apocalyptic number.

1421120551511 is a deficient number, since it is larger than the sum of its proper divisors (1).

1421120551511 is an equidigital number, since it uses as much as digits as its factorization.

1421120551511 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2000, while the sum is 29.

Adding to 1421120551511 its reverse (1151550211241), we get a palindrome (2572670762752).

The spelling of 1421120551511 in words is "one trillion, four hundred twenty-one billion, one hundred twenty million, five hundred fifty-one thousand, five hundred eleven".