20111000021211 has 32 divisors (see below), whose sum is σ = 29269629066240. Its totient is φ = 12181293194400.

The previous prime is 20111000021149. The next prime is 20111000021219. The reversal of 20111000021211 is 11212000011102.

It is not a de Polignac number, because 20111000021211 - 2²⁵ = 20110966466779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20111000021219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 408976656 + ... + 409025826.

It is an arithmetic number, because the mean of its divisors is an integer number (914675908320).

Almost surely, 2^{20111000021211} is an apocalyptic number.

20111000021211 is a deficient number, since it is larger than the sum of its proper divisors (9158629045029).

20111000021211 is a wasteful number, since it uses less digits than its factorization.

20111000021211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56247.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 20111000021211 its reverse (11212000011102), we get a palindrome (31323000032313).

The spelling of 20111000021211 in words is "twenty trillion, one hundred eleven billion, twenty-one thousand, two hundred eleven".