1101210220 has 96 divisors (see below), whose sum is σ = 2626525440. Its totient is φ = 384303360.

The previous prime is 1101210197. The next prime is 1101210283. The reversal of 1101210220 is 220121011.

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 = 1101210197 and 1101210206.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 557154 + ... + 559126.

It is an arithmetic number, because the mean of its divisors is an integer number (27359640).

Almost surely, 2^1101210220 is an apocalyptic number.

1101210220 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 1101210220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313262720).

1101210220 is an abundant number, since it is smaller than the sum of its proper divisors (1525315220).

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

1101210220 is a wasteful number, since it uses less digits than its factorization.

1101210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2095 (or 2093 counting only the distinct ones).

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

The square root of 1101210220 is about 33184.4876410651. The cubic root of 1101210220 is about 1032.6585482340.

Adding to 1101210220 its reverse (220121011), we get a palindrome (1321331231).

The spelling of 1101210220 in words is "one billion, one hundred one million, two hundred ten thousand, two hundred twenty".