1101012220 has 48 divisors (see below), whose sum is σ = 2882654208. Its totient is φ = 343172160.

The previous prime is 1101012197. The next prime is 1101012257. The reversal of 1101012220 is 222101011.

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 = 1101012197 and 1101012206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 355932 + ... + 359011.

It is an arithmetic number, because the mean of its divisors is an integer number (60055296).

Almost surely, 2^1101012220 is an apocalyptic number.

1101012220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101012220 is an abundant number, since it is smaller than the sum of its proper divisors (1781641988).

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

1101012220 is a wasteful number, since it uses less digits than its factorization.

1101012220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 714970 (or 714968 counting only the distinct ones).

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

The square root of 1101012220 is about 33181.5041853138. The cubic root of 1101012220 is about 1032.5966531043.

Adding to 1101012220 its reverse (222101011), we get a palindrome (1323113231).

The spelling of 1101012220 in words is "one billion, one hundred one million, twelve thousand, two hundred twenty".