21010411012 has 6 divisors (see below), whose sum is σ = 36768219278. Its totient is φ = 10505205504.

The previous prime is 21010411007. The next prime is 21010411031. The reversal of 21010411012 is 21011401012.

It can be written as a sum of positive squares in only one way, i.e., 20861180356 + 149230656 = 144434^2 + 12216^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21010410983 and 21010411001.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2626301373 + ... + 2626301380.

Almost surely, 2^21010411012 is an apocalyptic number.

It is an amenable number.

21010411012 is a deficient number, since it is larger than the sum of its proper divisors (15757808266).

21010411012 is a wasteful number, since it uses less digits than its factorization.

21010411012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5252602757 (or 5252602755 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21010411012 its reverse (21011401012), we get a palindrome (42021812024).

The spelling of 21010411012 in words is "twenty-one billion, ten million, four hundred eleven thousand, twelve".