20010220201111 has 24 divisors (see below), whose sum is σ = 24503199174960. Its totient is φ = 16248311251200.

The previous prime is 20010220201003. The next prime is 20010220201123. The reversal of 20010220201111 is 11110202201002.

It is not a de Polignac number, because 20010220201111 - 2⁹ = 20010220200599 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010220201091 and 20010220201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010220201151) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26270671 + ... + 27021631.

It is an arithmetic number, because the mean of its divisors is an integer number (1020966632290).

Almost surely, 2^{20010220201111} is an apocalyptic number.

20010220201111 is a deficient number, since it is larger than the sum of its proper divisors (4492978973849).

20010220201111 is a wasteful number, since it uses less digits than its factorization.

20010220201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779615 (or 779608 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20010220201111 its reverse (11110202201002), we get a palindrome (31120422402113).

The spelling of 20010220201111 in words is "twenty trillion, ten billion, two hundred twenty million, two hundred one thousand, one hundred eleven".