20110221202199 has 4 divisors (see below), whose sum is σ = 20178856769736. Its totient is φ = 20041585634664.

The previous prime is 20110221202189. The next prime is 20110221202217. The reversal of 20110221202199 is 99120212201102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20110221202199 - 2³² = 20105926234903 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20110221202189) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34317783329 + ... + 34317783914.

It is an arithmetic number, because the mean of its divisors is an integer number (5044714192434).

Almost surely, 2^{20110221202199} is an apocalyptic number.

20110221202199 is a deficient number, since it is larger than the sum of its proper divisors (68635567537).

20110221202199 is an equidigital number, since it uses as much as digits as its factorization.

20110221202199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68635567536.

The product of its (nonzero) digits is 2592, while the sum is 32.

The spelling of 20110221202199 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, two hundred two thousand, one hundred ninety-nine".