21002200102010 has 32 divisors (see below), whose sum is σ = 39447891077760. Its totient is φ = 8035567258048.

The previous prime is 21002200101983. The next prime is 21002200102027. The reversal of 21002200102010 is 1020100220012.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 21002200101982 and 21002200102000.

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, 47174309 + ... + 47617431.

It is an arithmetic number, because the mean of its divisors is an integer number (1232746596180).

Almost surely, 2^{21002200102010} is an apocalyptic number.

21002200102010 is a deficient number, since it is larger than the sum of its proper divisors (18445690975750).

21002200102010 is a wasteful number, since it uses less digits than its factorization.

21002200102010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649222.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 21002200102010 its reverse (1020100220012), we get a palindrome (22022300322022).

The spelling of 21002200102010 in words is "twenty-one trillion, two billion, two hundred million, one hundred two thousand, ten".