21000341044 has 6 divisors (see below), whose sum is σ = 36750596834. Its totient is φ = 10500170520.

The previous prime is 21000341023. The next prime is 21000341051. The reversal of 21000341044 is 44014300012.

It can be written as a sum of positive squares in only one way, i.e., 18506337444 + 2494003600 = 136038^2 + 49940^2 .

It is a super-2 number, since 2×21000341044² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 2625042627 + ... + 2625042634.

Almost surely, 2^21000341044 is an apocalyptic number.

It is an amenable number.

21000341044 is a deficient number, since it is larger than the sum of its proper divisors (15750255790).

21000341044 is a wasteful number, since it uses less digits than its factorization.

21000341044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5250085265 (or 5250085263 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21000341044 its reverse (44014300012), we get a palindrome (65014641056).

The spelling of 21000341044 in words is "twenty-one billion, three hundred forty-one thousand, forty-four".