21011022000049 has 2 divisors, whose sum is σ = 21011022000050. Its totient is φ = 21011022000048.

The previous prime is 21011021999977. The next prime is 21011022000103. The reversal of 21011022000049 is 94000022011012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20628673934400 + 382348065649 = 4541880^2 + 618343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21011022000049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21011021999993 and 21011022000029.

It is not a weakly prime, because it can be changed into another prime (21011022001049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10505511000024 + 10505511000025.

It is an arithmetic number, because the mean of its divisors is an integer number (10505511000025).

Almost surely, 2^{21011022000049} is an apocalyptic number.

It is an amenable number.

21011022000049 is a deficient number, since it is larger than the sum of its proper divisors (1).

21011022000049 is an equidigital number, since it uses as much as digits as its factorization.

21011022000049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 22.

The spelling of 21011022000049 in words is "twenty-one trillion, eleven billion, twenty-two million, forty-nine", and thus it is an aban number and an uban number.