21002210120001 has 64 divisors (see below), whose sum is σ = 31896947174400. Its totient is φ = 12175055827200.

The previous prime is 21002210119993. The next prime is 21002210120039. The reversal of 21002210120001 is 10002101220012.

It is not a de Polignac number, because 21002210120001 - 2³ = 21002210119993 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21002210120071) by changing a digit.

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 in 63 ways as a sum of consecutive naturals, for example, 948298410 + ... + 948320556.

It is an arithmetic number, because the mean of its divisors is an integer number (498389799600).

Almost surely, 2^{21002210120001} is an apocalyptic number.

It is an amenable number.

21002210120001 is a deficient number, since it is larger than the sum of its proper divisors (10894737054399).

21002210120001 is a wasteful number, since it uses less digits than its factorization.

21002210120001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31390.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 21002210120001 its reverse (10002101220012), we get a palindrome (31004311340013).

The spelling of 21002210120001 in words is "twenty-one trillion, two billion, two hundred ten million, one hundred twenty thousand, one".