10201220020111 has 4 divisors (see below), whose sum is σ = 10227855059712. Its totient is φ = 10174584980512.

The previous prime is 10201220020099. The next prime is 10201220020151. The reversal of 10201220020111 is 11102002210201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10201220020111 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10201220020091 and 10201220020100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10201220020151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13317519226 + ... + 13317519991.

It is an arithmetic number, because the mean of its divisors is an integer number (2556963764928).

Almost surely, 2^{10201220020111} is an apocalyptic number.

10201220020111 is a deficient number, since it is larger than the sum of its proper divisors (26635039601).

10201220020111 is an equidigital number, since it uses as much as digits as its factorization.

10201220020111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26635039600.

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

Adding to 10201220020111 its reverse (11102002210201), we get a palindrome (21303222230312).

The spelling of 10201220020111 in words is "ten trillion, two hundred one billion, two hundred twenty million, twenty thousand, one hundred eleven".