22111121000 has 32 divisors (see below), whose sum is σ = 51740025480. Its totient is φ = 8844448000.

The previous prime is 22111120979. The next prime is 22111121023. The reversal of 22111121000 is 12111122.

It can be written as a sum of positive squares in 4 ways, for example, as 8374812196 + 13736308804 = 91514^2 + 117202^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11054561 + ... + 11056560.

Almost surely, 2^22111121000 is an apocalyptic number.

22111121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22111121000 is an abundant number, since it is smaller than the sum of its proper divisors (29628904480).

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

22111121000 is a wasteful number, since it uses less digits than its factorization.

22111121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22111142 (or 22111128 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 22111121000 its reverse (12111122), we get a palindrome (22123232122).

It can be divided in two parts, 2211 and 1121000, that added together give a palindrome (1123211).

The spelling of 22111121000 in words is "twenty-two billion, one hundred eleven million, one hundred twenty-one thousand".