1012121587723 has 2 divisors, whose sum is σ = 1012121587724. Its totient is φ = 1012121587722.

The previous prime is 1012121587717. The next prime is 1012121587739. The reversal of 1012121587723 is 3277851212101.

1012121587723 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1012121587723 - 2⁵ = 1012121587691 is a prime.

It is not a weakly prime, because it can be changed into another prime (1012121587793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 506060793861 + 506060793862.

It is an arithmetic number, because the mean of its divisors is an integer number (506060793862).

Almost surely, 2^{1012121587723} is an apocalyptic number.

1012121587723 is a deficient number, since it is larger than the sum of its proper divisors (1).

1012121587723 is an equidigital number, since it uses as much as digits as its factorization.

1012121587723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 47040, while the sum is 40.

Adding to 1012121587723 its reverse (3277851212101), we get a palindrome (4289972799824).

The spelling of 1012121587723 in words is "one trillion, twelve billion, one hundred twenty-one million, five hundred eighty-seven thousand, seven hundred twenty-three".