10921900 has 36 divisors (see below), whose sum is σ = 25857720. Its totient is φ = 3971200.

The previous prime is 10921891. The next prime is 10921901. The reversal of 10921900 is 912901.

It is a super-2 number, since 2×10921900² = 238575799220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (10921901) by changing a digit.

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, 3865 + ... + 6064.

It is an arithmetic number, because the mean of its divisors is an integer number (718270).

Almost surely, 2^10921900 is an apocalyptic number.

10921900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10921900 is an abundant number, since it is smaller than the sum of its proper divisors (14935820).

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

10921900 is a wasteful number, since it uses less digits than its factorization.

10921900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9954 (or 9947 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 10921900 is about 3304.8297989458. The cubic root of 10921900 is about 221.8704164893.

It can be divided in two parts, 1092 and 1900, that added together give a palindrome (2992).

The spelling of 10921900 in words is "ten million, nine hundred twenty-one thousand, nine hundred".