20021100020211 has 16 divisors (see below), whose sum is σ = 26709315264000. Its totient is φ = 13340142983520.

The previous prime is 20021100020189. The next prime is 20021100020221. The reversal of 20021100020211 is 11202000112002.

It is not a de Polignac number, because 20021100020211 - 2⁹ = 20021100019699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20021100020221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171821776 + ... + 171938258.

It is an arithmetic number, because the mean of its divisors is an integer number (1669332204000).

Almost surely, 2^{20021100020211} is an apocalyptic number.

20021100020211 is a deficient number, since it is larger than the sum of its proper divisors (6688215243789).

20021100020211 is a wasteful number, since it uses less digits than its factorization.

20021100020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147146.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20021100020211 its reverse (11202000112002), we get a palindrome (31223100132213).

The spelling of 20021100020211 in words is "twenty trillion, twenty-one billion, one hundred million, twenty thousand, two hundred eleven".