1111020102 has 24 divisors (see below), whose sum is σ = 2490218640. Its totient is φ = 357569520.

The previous prime is 1111020061. The next prime is 1111020103. The reversal of 1111020102 is 2010201111.

It is a happy number.

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 (1111020103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1063674 + ... + 1064717.

It is an arithmetic number, because the mean of its divisors is an integer number (103759110).

Almost surely, 2^1111020102 is an apocalyptic number.

1111020102 is an abundant number, since it is smaller than the sum of its proper divisors (1379198538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1111020102 is a wasteful number, since it uses less digits than its factorization.

1111020102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2128428 (or 2128425 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 1111020102 is about 33331.9681687115. The cubic root of 1111020102 is about 1035.7158892323.

Adding to 1111020102 its reverse (2010201111), we get a palindrome (3121221213).

The spelling of 1111020102 in words is "one billion, one hundred eleven million, twenty thousand, one hundred two".