20010221222211 has 24 divisors (see below), whose sum is σ = 32902181934336. Its totient is φ = 11600128243440.

The previous prime is 20010221222207. The next prime is 20010221222231. The reversal of 20010221222211 is 11222212201002.

It is a happy number.

20010221222211 is a `hidden beast` number, since 2 + 0 + 0 + 10 + 221 + 222 + 211 = 666.

It is not a de Polignac number, because 20010221222211 - 2² = 20010221222207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20010221222231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4393985695 + ... + 4393990248.

It is an arithmetic number, because the mean of its divisors is an integer number (1370924247264).

Almost surely, 2^{20010221222211} is an apocalyptic number.

20010221222211 is a deficient number, since it is larger than the sum of its proper divisors (12891960712125).

20010221222211 is a wasteful number, since it uses less digits than its factorization.

20010221222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8787975983 (or 8787975980 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20010221222211 its reverse (11222212201002), we get a palindrome (31232433423213).

The spelling of 20010221222211 in words is "twenty trillion, ten billion, two hundred twenty-one million, two hundred twenty-two thousand, two hundred eleven".