20221111011211 has 16 divisors (see below), whose sum is σ = 22389532064640. Its totient is φ = 18107734898880.

The previous prime is 20221111011203. The next prime is 20221111011221. The reversal of 20221111011211 is 11211011112202.

It is not a de Polignac number, because 20221111011211 - 2³ = 20221111011203 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221111011221) 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, 18374520 + ... + 19443898.

It is an arithmetic number, because the mean of its divisors is an integer number (1399345754040).

Almost surely, 2^{20221111011211} is an apocalyptic number.

20221111011211 is a deficient number, since it is larger than the sum of its proper divisors (2168421053429).

20221111011211 is a wasteful number, since it uses less digits than its factorization.

20221111011211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095114.

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

Adding to 20221111011211 its reverse (11211011112202), we get a palindrome (31432122123413).

The spelling of 20221111011211 in words is "twenty trillion, two hundred twenty-one billion, one hundred eleven million, eleven thousand, two hundred eleven".