20021122 has 8 divisors (see below), whose sum is σ = 32761872. Its totient is φ = 9100500.

The previous prime is 20021093. The next prime is 20021137. The reversal of 20021122 is 22112002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20021122² = 801690652277768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021099 and 20021108.

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 3 ways as a sum of consecutive naturals, for example, 455004 + ... + 455047.

It is an arithmetic number, because the mean of its divisors is an integer number (4095234).

Almost surely, 2^20021122 is an apocalyptic number.

20021122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20021122 is a deficient number, since it is larger than the sum of its proper divisors (12740750).

20021122 is a wasteful number, since it uses less digits than its factorization.

20021122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910064.

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

The square root of 20021122 is about 4474.4968432216. The cubic root of 20021122 is about 271.5372845883.

Adding to 20021122 its reverse (22112002), we get a palindrome (42133124).

The spelling of 20021122 in words is "twenty million, twenty-one thousand, one hundred twenty-two".