1022113100 has 72 divisors (see below), whose sum is σ = 2450655648. Its totient is φ = 368051200.

The previous prime is 1022113097. The next prime is 1022113129. The reversal of 1022113100 is 13112201.

It is a super-2 number, since 2×1022113100² = 2089430378383220000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26030 + ... + 52170.

It is an arithmetic number, because the mean of its divisors is an integer number (34036884).

Almost surely, 2^1022113100 is an apocalyptic number.

1022113100 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 1022113100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225327824).

1022113100 is an abundant number, since it is smaller than the sum of its proper divisors (1428542548).

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

1022113100 is a wasteful number, since it uses less digits than its factorization.

1022113100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26195 (or 26188 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1022113100 is about 31970.5035931560. The cubic root of 1022113100 is about 1007.3173589911.

Adding to 1022113100 its reverse (13112201), we get a palindrome (1035225301).

The spelling of 1022113100 in words is "one billion, twenty-two million, one hundred thirteen thousand, one hundred".