21201012000005 has 16 divisors (see below), whose sum is σ = 26563035058560. Its totient is φ = 16213800322368.

The previous prime is 21201011999969. The next prime is 21201012000011. The reversal of 21201012000005 is 50000021010212.

It is a cyclic number.

It is not a de Polignac number, because 21201012000005 - 2¹⁰ = 21201011998981 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54252035 + ... + 54641424.

It is an arithmetic number, because the mean of its divisors is an integer number (1660189691160).

Almost surely, 2^{21201012000005} is an apocalyptic number.

It is an amenable number.

21201012000005 is a deficient number, since it is larger than the sum of its proper divisors (5362023058555).

21201012000005 is a wasteful number, since it uses less digits than its factorization.

21201012000005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108895180.

The product of its (nonzero) digits is 40, while the sum is 14.

Adding to 21201012000005 its reverse (50000021010212), we get a palindrome (71201033010217).

The spelling of 21201012000005 in words is "twenty-one trillion, two hundred one billion, twelve million, five", and thus it is an aban number.