1102002120 has 48 divisors (see below), whose sum is σ = 3581508060. Its totient is φ = 293867136.

The previous prime is 1102002089. The next prime is 1102002133. The reversal of 1102002120 is 212002011.

It can be written as a sum of positive squares in 2 ways, for example, as 1008570564 + 93431556 = 31758^2 + 9666^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1530199 + ... + 1530918.

Almost surely, 2^1102002120 is an apocalyptic number.

1102002120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102002120 is an abundant number, since it is smaller than the sum of its proper divisors (2479505940).

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

1102002120 is a wasteful number, since it uses less digits than its factorization.

1102002120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3061134 (or 3061127 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

The square root of 1102002120 is about 33196.4172765677. The cubic root of 1102002120 is about 1032.9060233438.

Adding to 1102002120 its reverse (212002011), we get a palindrome (1314004131).

The spelling of 1102002120 in words is "one billion, one hundred two million, two thousand, one hundred twenty".