2331400221061 has 2 divisors, whose sum is σ = 2331400221062. Its totient is φ = 2331400221060.

The previous prime is 2331400221053. The next prime is 2331400221097. The reversal of 2331400221061 is 1601220041332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2301122133025 + 30278088036 = 1516945^2 + 174006^2 .

It is a cyclic number.

It is not a de Polignac number, because 2331400221061 - 2³ = 2331400221053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2331400221461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1165700110530 + 1165700110531.

It is an arithmetic number, because the mean of its divisors is an integer number (1165700110531).

Almost surely, 2^{2331400221061} is an apocalyptic number.

It is an amenable number.

2331400221061 is a deficient number, since it is larger than the sum of its proper divisors (1).

2331400221061 is an equidigital number, since it uses as much as digits as its factorization.

2331400221061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 2331400221061 its reverse (1601220041332), we get a palindrome (3932620262393).

The spelling of 2331400221061 in words is "two trillion, three hundred thirty-one billion, four hundred million, two hundred twenty-one thousand, sixty-one".