21010142324 has 6 divisors (see below), whose sum is σ = 36767749074. Its totient is φ = 10505071160.

The previous prime is 21010142273. The next prime is 21010142333. The reversal of 21010142324 is 42324101012.

It can be written as a sum of positive squares in only one way, i.e., 18528109924 + 2482032400 = 136118^2 + 49820^2 .

It is a super-2 number, since 2×21010142324² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21010142296 and 21010142305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2626267787 + ... + 2626267794.

It is an arithmetic number, because the mean of its divisors is an integer number (6127958179).

Almost surely, 2^21010142324 is an apocalyptic number.

It is an amenable number.

21010142324 is a deficient number, since it is larger than the sum of its proper divisors (15757606750).

21010142324 is a wasteful number, since it uses less digits than its factorization.

21010142324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252535585 (or 5252535583 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 21010142324 its reverse (42324101012), we get a palindrome (63334243336).

The spelling of 21010142324 in words is "twenty-one billion, ten million, one hundred forty-two thousand, three hundred twenty-four".