1102020220 has 24 divisors (see below), whose sum is σ = 2644848864. Its totient is φ = 377835456.

The previous prime is 1102020187. The next prime is 1102020251. The reversal of 1102020220 is 220202011.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1102020197 and 1102020206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3935647 + ... + 3935926.

It is an arithmetic number, because the mean of its divisors is an integer number (110202036).

Almost surely, 2^1102020220 is an apocalyptic number.

1102020220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102020220 is an abundant number, since it is smaller than the sum of its proper divisors (1542828644).

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

1102020220 is a wasteful number, since it uses less digits than its factorization.

1102020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7871589 (or 7871587 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1102020220 is about 33196.6898952290. The cubic root of 1102020220 is about 1032.9116783531.

Adding to 1102020220 its reverse (220202011), we get a palindrome (1322222231).

The spelling of 1102020220 in words is "one billion, one hundred two million, twenty thousand, two hundred twenty".