1102022020 has 36 divisors (see below), whose sum is σ = 2543763852. Its totient is φ = 400734400.

The previous prime is 1102022003. The next prime is 1102022071. The reversal of 1102022020 is 202202011.

It can be written as a sum of positive squares in 2 ways, for example, as 243297604 + 858724416 = 15598^2 + 29304^2 .

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 = 1102021988 and 1102022006.

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 11 ways as a sum of consecutive naturals, for example, 225271 + ... + 230110.

It is an arithmetic number, because the mean of its divisors is an integer number (70660107).

Almost surely, 2^1102022020 is an apocalyptic number.

1102022020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1102022020 is an abundant number, since it is smaller than the sum of its proper divisors (1441741832).

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

1102022020 is a wasteful number, since it uses less digits than its factorization.

1102022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455412 (or 455399 counting only the distinct ones).

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

The square root of 1102022020 is about 33196.7170063547. The cubic root of 1102022020 is about 1032.9122407263.

Adding to 1102022020 its reverse (202202011), we get a palindrome (1304224031).

Subtracting from 1102022020 its reverse (202202011), we obtain a square (899820009 = 29997²).

The spelling of 1102022020 in words is "one billion, one hundred two million, twenty-two thousand, twenty".