101043034021 has 4 divisors (see below), whose sum is σ = 102178349100. Its totient is φ = 99907718944.

The previous prime is 101043034003. The next prime is 101043034049. The reversal of 101043034021 is 120430340101.

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

It can be written as a sum of positive squares in 2 ways, for example, as 69140073025 + 31902960996 = 262945^2 + 178614^2 .

It is a cyclic number.

It is not a de Polignac number, because 101043034021 - 2¹⁷ = 101042902949 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 101043034021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101043034061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 567657406 + ... + 567657583.

It is an arithmetic number, because the mean of its divisors is an integer number (25544587275).

Almost surely, 2^101043034021 is an apocalyptic number.

It is an amenable number.

101043034021 is a deficient number, since it is larger than the sum of its proper divisors (1135315079).

101043034021 is an equidigital number, since it uses as much as digits as its factorization.

101043034021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1135315078.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 101043034021 its reverse (120430340101), we get a palindrome (221473374122).

The spelling of 101043034021 in words is "one hundred one billion, forty-three million, thirty-four thousand, twenty-one".