101221000222111 has 32 divisors (see below), whose sum is σ = 127449326269440. Its totient is φ = 78091211808000.

The previous prime is 101221000222103. The next prime is 101221000222123. The reversal of 101221000222111 is 111222000122101.

It is a cyclic number.

It is not a de Polignac number, because 101221000222111 - 2³ = 101221000222103 is a prime.

It is a super-2 number, since 2×101221000222111² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101221000222711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 880975555 + ... + 881090443.

It is an arithmetic number, because the mean of its divisors is an integer number (3982791445920).

Almost surely, 2^{101221000222111} is an apocalyptic number.

101221000222111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

101221000222111 is a deficient number, since it is larger than the sum of its proper divisors (26228326047329).

101221000222111 is a wasteful number, since it uses less digits than its factorization.

101221000222111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228295.

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

Adding to 101221000222111 its reverse (111222000122101), we get a palindrome (212443000344212).

The spelling of 101221000222111 in words is "one hundred one trillion, two hundred twenty-one billion, two hundred twenty-two thousand, one hundred eleven".