2121403650367 has 2 divisors, whose sum is σ = 2121403650368. Its totient is φ = 2121403650366.

The previous prime is 2121403650329. The next prime is 2121403650397. The reversal of 2121403650367 is 7630563041212.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2121403650367 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121403650397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060701825183 + 1060701825184.

It is an arithmetic number, because the mean of its divisors is an integer number (1060701825184).

Almost surely, 2^{2121403650367} is an apocalyptic number.

2121403650367 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121403650367 is an equidigital number, since it uses as much as digits as its factorization.

2121403650367 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 40.

Adding to 2121403650367 its reverse (7630563041212), we get a palindrome (9751966691579).

The spelling of 2121403650367 in words is "two trillion, one hundred twenty-one billion, four hundred three million, six hundred fifty thousand, three hundred sixty-seven".