10111021022221 has 16 divisors (see below), whose sum is σ = 11610537482880. Its totient is φ = 8625278047680.

The previous prime is 10111021022209. The next prime is 10111021022269. The reversal of 10111021022221 is 12222012011101.

It is not a de Polignac number, because 10111021022221 - 2⁵ = 10111021022189 is a prime.

It is a super-2 number, since 2×10111021022221² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10111021022195 and 10111021022204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10111021022281) 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, 72464295 + ... + 72603691.

It is an arithmetic number, because the mean of its divisors is an integer number (725658592680).

Almost surely, 2^{10111021022221} is an apocalyptic number.

It is an amenable number.

10111021022221 is a deficient number, since it is larger than the sum of its proper divisors (1499516460659).

10111021022221 is a wasteful number, since it uses less digits than its factorization.

10111021022221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188724.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10111021022221 its reverse (12222012011101), we get a palindrome (22333033033322).

The spelling of 10111021022221 in words is "ten trillion, one hundred eleven billion, twenty-one million, twenty-two thousand, two hundred twenty-one".