20021012022111 has 8 divisors (see below), whose sum is σ = 26821197780864. Its totient is φ = 13284083805720.

The previous prime is 20021012022083. The next prime is 20021012022127. The reversal of 20021012022111 is 11122021012002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20021012022111 - 2¹⁵ = 20021011989343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021012022161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15814384851 + ... + 15814386116.

It is an arithmetic number, because the mean of its divisors is an integer number (3352649722608).

Almost surely, 2^{20021012022111} is an apocalyptic number.

20021012022111 is a deficient number, since it is larger than the sum of its proper divisors (6800185758753).

20021012022111 is a wasteful number, since it uses less digits than its factorization.

20021012022111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31628771181.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021012022111 its reverse (11122021012002), we get a palindrome (31143033034113).

The spelling of 20021012022111 in words is "twenty trillion, twenty-one billion, twelve million, twenty-two thousand, one hundred eleven".