1111120101 has 72 divisors (see below), whose sum is σ = 2032203264. Its totient is φ = 569669760.

The previous prime is 1111120099. The next prime is 1111120103. The reversal of 1111120101 is 1010211111.

It is an interprime number because it is at equal distance from previous prime (1111120099) and next prime (1111120103).

It is not a de Polignac number, because 1111120101 - 2¹ = 1111120099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111120103) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1120716 + ... + 1121706.

Almost surely, 2^1111120101 is an apocalyptic number.

It is an amenable number.

1111120101 is a deficient number, since it is larger than the sum of its proper divisors (921083163).

1111120101 is a wasteful number, since it uses less digits than its factorization.

1111120101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091 (or 1051 counting only the distinct ones).

The product of its (nonzero) digits is 2, while the sum is 9.

The square root of 1111120101 is about 33333.4681813939. The cubic root of 1111120101 is about 1035.7469620113.

Adding to 1111120101 its reverse (1010211111), we get a palindrome (2121331212).

The spelling of 1111120101 in words is "one billion, one hundred eleven million, one hundred twenty thousand, one hundred one".