1102101220 has 48 divisors (see below), whose sum is σ = 2532938688. Its totient is φ = 399474560.

The previous prime is 1102101199. The next prime is 1102101227. The reversal of 1102101220 is 221012011.

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 = 1102101197 and 1102101206.

It is not an unprimeable number, because it can be changed into a prime (1102101227) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61839 + ... + 77641.

It is an arithmetic number, because the mean of its divisors is an integer number (52769556).

Almost surely, 2^1102101220 is an apocalyptic number.

1102101220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1102101220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1266469344).

1102101220 is an abundant number, since it is smaller than the sum of its proper divisors (1430837468).

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

1102101220 is a wasteful number, since it uses less digits than its factorization.

1102101220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16140 (or 16138 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1102101220 is about 33197.9098739665. The cubic root of 1102101220 is about 1032.9369845421.

Adding to 1102101220 its reverse (221012011), we get a palindrome (1323113231).

The spelling of 1102101220 in words is "one billion, one hundred two million, one hundred one thousand, two hundred twenty".