2121331007 has 2 divisors, whose sum is σ = 2121331008. Its totient is φ = 2121331006.

The previous prime is 2121331001. The next prime is 2121331031. The reversal of 2121331007 is 7001331212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121331007 - 2¹⁰ = 2121329983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2121331007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2121331001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060665503 + 1060665504.

It is an arithmetic number, because the mean of its divisors is an integer number (1060665504).

Almost surely, 2^2121331007 is an apocalyptic number.

2121331007 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121331007 is an equidigital number, since it uses as much as digits as its factorization.

2121331007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 2121331007 is about 46057.9092773435. The cubic root of 2121331007 is about 1284.9004463947.

Adding to 2121331007 its reverse (7001331212), we get a palindrome (9122662219).

The spelling of 2121331007 in words is "two billion, one hundred twenty-one million, three hundred thirty-one thousand, seven".