2121053543507 has 2 divisors, whose sum is σ = 2121053543508. Its totient is φ = 2121053543506.

The previous prime is 2121053543503. The next prime is 2121053543549. The reversal of 2121053543507 is 7053453501212.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2121053543507 - 2² = 2121053543503 is a prime.

It is a super-2 number, since 2×2121053543507² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2121053543503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1060526771753 + 1060526771754.

It is an arithmetic number, because the mean of its divisors is an integer number (1060526771754).

Almost surely, 2^{2121053543507} is an apocalyptic number.

2121053543507 is a deficient number, since it is larger than the sum of its proper divisors (1).

2121053543507 is an equidigital number, since it uses as much as digits as its factorization.

2121053543507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 126000, while the sum is 38.

The spelling of 2121053543507 in words is "two trillion, one hundred twenty-one billion, fifty-three million, five hundred forty-three thousand, five hundred seven".