20021100202010 has 64 divisors (see below), whose sum is σ = 37259593090560. Its totient is φ = 7741564346880.

The previous prime is 20021100202001. The next prime is 20021100202057. The reversal of 20021100202010 is 1020200112002.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20021100201982 and 20021100202000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 137517014 + ... + 137662526.

It is an arithmetic number, because the mean of its divisors is an integer number (582181142040).

Almost surely, 2^{20021100202010} is an apocalyptic number.

20021100202010 is a deficient number, since it is larger than the sum of its proper divisors (17238492888550).

20021100202010 is a wasteful number, since it uses less digits than its factorization.

20021100202010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149463.

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

Adding to 20021100202010 its reverse (1020200112002), we get a palindrome (21041300314012).

The spelling of 20021100202010 in words is "twenty trillion, twenty-one billion, one hundred million, two hundred two thousand, ten".