1111112102101 has 4 divisors (see below), whose sum is σ = 1111123254412. Its totient is φ = 1111100949792.

The previous prime is 1111112102059. The next prime is 1111112102119. The reversal of 1111112102101 is 1012012111111.

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

It can be written as a sum of positive squares in 2 ways, for example, as 829421847076 + 281690255025 = 910726^2 + 530745^2 .

It is a cyclic number.

It is not a de Polignac number, because 1111112102101 - 2¹¹ = 1111112100053 is a prime.

It is a super-2 number, since 2×1111112102101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111112102131) 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, 5425350 + ... + 5626423.

It is an arithmetic number, because the mean of its divisors is an integer number (277780813603).

Almost surely, 2^{1111112102101} is an apocalyptic number.

It is an amenable number.

1111112102101 is a deficient number, since it is larger than the sum of its proper divisors (11152311).

1111112102101 is a wasteful number, since it uses less digits than its factorization.

1111112102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11152310.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 1111112102101 its reverse (1012012111111), we get a palindrome (2123124213212).

The spelling of 1111112102101 in words is "one trillion, one hundred eleven billion, one hundred twelve million, one hundred two thousand, one hundred one".