1020022200 has 192 divisors, whose sum is σ = 3589056000. Its totient is φ = 266152320.

The previous prime is 1020022189. The next prime is 1020022261. The reversal of 1020022200 is 22200201.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251791 + ... + 255809.

It is an arithmetic number, because the mean of its divisors is an integer number (18693000).

Almost surely, 2^1020022200 is an apocalyptic number.

1020022200 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 1020022200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1794528000).

1020022200 is an abundant number, since it is smaller than the sum of its proper divisors (2569033800).

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

1020022200 is a wasteful number, since it uses less digits than its factorization.

1020022200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091 (or 4076 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 1020022200 is about 31937.7863979331. The cubic root of 1020022200 is about 1006.6300124562.

Adding to 1020022200 its reverse (22200201), we get a palindrome (1042222401).

It can be divided in two parts, 10200 and 22200, that added together give a square (32400 = 180²).

The spelling of 1020022200 in words is "one billion, twenty million, twenty-two thousand, two hundred".