1102123220 has 24 divisors (see below), whose sum is σ = 2524864608. Its totient is φ = 400772000.

The previous prime is 1102123199. The next prime is 1102123241. The reversal of 1102123220 is 223212011.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1102123199) and next prime (1102123241).

It is a junction number, because it is equal to n+sod(n) for n = 1102123195 and 1102123204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2504606 + ... + 2505045.

It is an arithmetic number, because the mean of its divisors is an integer number (105202692).

Almost surely, 2^1102123220 is an apocalyptic number.

1102123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102123220 is an abundant number, since it is smaller than the sum of its proper divisors (1422741388).

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

1102123220 is a wasteful number, since it uses less digits than its factorization.

1102123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5009671 (or 5009669 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1102123220 is about 33198.2412184742. The cubic root of 1102123220 is about 1032.9438576139.

Adding to 1102123220 its reverse (223212011), we get a palindrome (1325335231).

The spelling of 1102123220 in words is "one billion, one hundred two million, one hundred twenty-three thousand, two hundred twenty".