4100543456021 has 2 divisors, whose sum is σ = 4100543456022. Its totient is φ = 4100543456020.

The previous prime is 4100543456011. The next prime is 4100543456039. The reversal of 4100543456021 is 1206543450014.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4078016748100 + 22526707921 = 2019410^2 + 150089^2 .

It is a cyclic number.

It is not a de Polignac number, because 4100543456021 - 2²² = 4100539261717 is a prime.

It is a super-2 number, since 2×4100543456021² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4100543456011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2050271728010 + 2050271728011.

It is an arithmetic number, because the mean of its divisors is an integer number (2050271728011).

Almost surely, 2^{4100543456021} is an apocalyptic number.

It is an amenable number.

4100543456021 is a deficient number, since it is larger than the sum of its proper divisors (1).

4100543456021 is an equidigital number, since it uses as much as digits as its factorization.

4100543456021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 57600, while the sum is 35.

The spelling of 4100543456021 in words is "four trillion, one hundred billion, five hundred forty-three million, four hundred fifty-six thousand, twenty-one".