5551240222001 has 2 divisors, whose sum is σ = 5551240222002. Its totient is φ = 5551240222000.

The previous prime is 5551240221949. The next prime is 5551240222069. The reversal of 5551240222001 is 1002220421555.

It is a happy number.

5551240222001 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5150975219776 + 400265002225 = 2269576^2 + 632665^2 .

It is a cyclic number.

It is not a de Polignac number, because 5551240222001 - 2²² = 5551236027697 is a prime.

It is not a weakly prime, because it can be changed into another prime (5551240222301) 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 as a sum of consecutive naturals, namely, 2775620111000 + 2775620111001.

It is an arithmetic number, because the mean of its divisors is an integer number (2775620111001).

Almost surely, 2^{5551240222001} is an apocalyptic number.

It is an amenable number.

5551240222001 is a deficient number, since it is larger than the sum of its proper divisors (1).

5551240222001 is an equidigital number, since it uses as much as digits as its factorization.

5551240222001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8000, while the sum is 29.

Adding to 5551240222001 its reverse (1002220421555), we get a palindrome (6553460643556).

The spelling of 5551240222001 in words is "five trillion, five hundred fifty-one billion, two hundred forty million, two hundred twenty-two thousand, one".