1020222400 has 168 divisors, whose sum is σ = 2638608896. Its totient is φ = 387763200.

The previous prime is 1020222389. The next prime is 1020222419. The reversal of 1020222400 is 42220201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3323047 + ... + 3323353.

Almost surely, 2^1020222400 is an apocalyptic number.

1020222400 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 1020222400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1319304448).

1020222400 is an abundant number, since it is smaller than the sum of its proper divisors (1618386496).

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

1020222400 is a wasteful number, since it uses less digits than its factorization.

1020222400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 412 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1020222400 is about 31940.9204626291. The cubic root of 1020222400 is about 1006.6958653188.

Adding to 1020222400 its reverse (42220201), we get a palindrome (1062442601).

The spelling of 1020222400 in words is "one billion, twenty million, two hundred twenty-two thousand, four hundred".