1101002120 has 32 divisors (see below), whose sum is σ = 2607638400. Its totient is φ = 417221568.

The previous prime is 1101002099. The next prime is 1101002131. The reversal of 1101002120 is 212001011.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a junction number, because it is equal to n+sod(n) for n = 1101002098 and 1101002107.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 723584 + ... + 725103.

It is an arithmetic number, because the mean of its divisors is an integer number (81488700).

Almost surely, 2^1101002120 is an apocalyptic number.

1101002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101002120 is an abundant number, since it is smaller than the sum of its proper divisors (1506636280).

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

1101002120 is a wasteful number, since it uses less digits than its factorization.

1101002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448717 (or 1448713 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1101002120 is about 33181.3519917438. The cubic root of 1101002120 is about 1032.5934956286.

Adding to 1101002120 its reverse (212001011), we get a palindrome (1313003131).

The spelling of 1101002120 in words is "one billion, one hundred one million, two thousand, one hundred twenty".