21201012000010 has 16 divisors (see below), whose sum is σ = 38161913032800. Its totient is φ = 8480384481616.

The previous prime is 21201011999969. The next prime is 21201012000011. The reversal of 21201012000010 is 1000021010212.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (21201012000011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2277801 + ... + 6898579.

It is an arithmetic number, because the mean of its divisors is an integer number (2385119564550).

Almost surely, 2^{21201012000010} is an apocalyptic number.

21201012000010 is a deficient number, since it is larger than the sum of its proper divisors (16960901032790).

21201012000010 is a wasteful number, since it uses less digits than its factorization.

21201012000010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5079605.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 21201012000010 its reverse (1000021010212), we get a palindrome (22201033010222).

The spelling of 21201012000010 in words is "twenty-one trillion, two hundred one billion, twelve million, ten", and thus it is an aban number.