10211021021543 has 4 divisors (see below), whose sum is σ = 10363424320440. Its totient is φ = 10058617722648.

The previous prime is 10211021021533. The next prime is 10211021021603. The reversal of 10211021021543 is 34512012011201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 10211021021543 - 2⁸ = 10211021021287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10211021021533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76201649348 + ... + 76201649481.

It is an arithmetic number, because the mean of its divisors is an integer number (2590856080110).

Almost surely, 2^{10211021021543} is an apocalyptic number.

10211021021543 is a deficient number, since it is larger than the sum of its proper divisors (152403298897).

10211021021543 is an equidigital number, since it uses as much as digits as its factorization.

10211021021543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152403298896.

The product of its (nonzero) digits is 480, while the sum is 23.

Adding to 10211021021543 its reverse (34512012011201), we get a palindrome (44723033032744).

The spelling of 10211021021543 in words is "ten trillion, two hundred eleven billion, twenty-one million, twenty-one thousand, five hundred forty-three".