1021112220111 has 8 divisors (see below), whose sum is σ = 1361632758144. Its totient is φ = 680666581080.

The previous prime is 1021112220103. The next prime is 1021112220137. The reversal of 1021112220111 is 1110222111201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1021112220111 - 2³ = 1021112220103 is a prime.

It is a super-3 number, since 3×1021112220111³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021112222111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18692931 + ... + 18747476.

It is an arithmetic number, because the mean of its divisors is an integer number (170204094768).

Almost surely, 2^{1021112220111} is an apocalyptic number.

1021112220111 is a deficient number, since it is larger than the sum of its proper divisors (340520538033).

1021112220111 is an equidigital number, since it uses as much as digits as its factorization.

1021112220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37449501.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1021112220111 its reverse (1110222111201), we get a palindrome (2131334331312).

The spelling of 1021112220111 in words is "one trillion, twenty-one billion, one hundred twelve million, two hundred twenty thousand, one hundred eleven".