20021110220111 has 128 divisors (see below), whose sum is σ = 27646230528000. Its totient is φ = 13995769052160.

The previous prime is 20021110220093. The next prime is 20021110220213. The reversal of 20021110220111 is 11102201112002.

It is not a de Polignac number, because 20021110220111 - 2¹⁴ = 20021110203727 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021110210111) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4306538915 + ... + 4306543563.

It is an arithmetic number, because the mean of its divisors is an integer number (215986176000).

Almost surely, 2^{20021110220111} is an apocalyptic number.

20021110220111 is a deficient number, since it is larger than the sum of its proper divisors (7625120307889).

20021110220111 is a wasteful number, since it uses less digits than its factorization.

20021110220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5349.

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

Adding to 20021110220111 its reverse (11102201112002), we get a palindrome (31123311332113).

It can be divided in two parts, 2002 and 1110220111, that multiplied together give a palindrome (2222660662222).

The spelling of 20021110220111 in words is "twenty trillion, twenty-one billion, one hundred ten million, two hundred twenty thousand, one hundred eleven".