1101222020 has 48 divisors (see below), whose sum is σ = 2390472000. Its totient is φ = 425896320.

The previous prime is 1101221987. The next prime is 1101222047. The reversal of 1101222020 is 202221011.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1101221992 and 1101222010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64331 + ... + 79629.

It is an arithmetic number, because the mean of its divisors is an integer number (49801500).

Almost surely, 2^1101222020 is an apocalyptic number.

1101222020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1101222020 is an abundant number, since it is smaller than the sum of its proper divisors (1289249980).

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

1101222020 is a wasteful number, since it uses less digits than its factorization.

1101222020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15428 (or 15426 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1101222020 is about 33184.6654345045. The cubic root of 1101222020 is about 1032.6622366994.

Adding to 1101222020 its reverse (202221011), we get a palindrome (1303443031).

The spelling of 1101222020 in words is "one billion, one hundred one million, two hundred twenty-two thousand, twenty".