20021110012211 has 16 divisors (see below), whose sum is σ = 24970687703808. Its totient is φ = 15595050074400.

The previous prime is 20021110012193. The next prime is 20021110012223. The reversal of 20021110012211 is 11221001112002.

It is a cyclic number.

It is not a de Polignac number, because 20021110012211 - 2⁶ = 20021110012147 is a prime.

It is a super-2 number, since 2×20021110012211² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20021110012711) 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, 48249320 + ... + 48662501.

It is an arithmetic number, because the mean of its divisors is an integer number (1560667981488).

Almost surely, 2^{20021110012211} is an apocalyptic number.

20021110012211 is a deficient number, since it is larger than the sum of its proper divisors (4949577691597).

20021110012211 is a wasteful number, since it uses less digits than its factorization.

20021110012211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96914522.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20021110012211 its reverse (11221001112002), we get a palindrome (31242111124213).

The spelling of 20021110012211 in words is "twenty trillion, twenty-one billion, one hundred ten million, twelve thousand, two hundred eleven".