20100221120211 has 8 divisors (see below), whose sum is σ = 26806531822224. Its totient is φ = 13397028915840.

The previous prime is 20100221120207. The next prime is 20100221120293. The reversal of 20100221120211 is 11202112200102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20100221120211 - 2² = 20100221120207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20100221120201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 779609370 + ... + 779635151.

It is an arithmetic number, because the mean of its divisors is an integer number (3350816477778).

Almost surely, 2^{20100221120211} is an apocalyptic number.

20100221120211 is a deficient number, since it is larger than the sum of its proper divisors (6706310702013).

20100221120211 is a wasteful number, since it uses less digits than its factorization.

20100221120211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1559248821.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20100221120211 its reverse (11202112200102), we get a palindrome (31302333320313).

The spelling of 20100221120211 in words is "twenty trillion, one hundred billion, two hundred twenty-one million, one hundred twenty thousand, two hundred eleven".