22011211020 has 24 divisors (see below), whose sum is σ = 61631391024. Its totient is φ = 5869656256.

The previous prime is 22011211009. The next prime is 22011211097. The reversal of 22011211020 is 2011211022.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 22011210987 and 22011211005.

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, 183426699 + ... + 183426818.

It is an arithmetic number, because the mean of its divisors is an integer number (2567974626).

Almost surely, 2^22011211020 is an apocalyptic number.

22011211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22011211020 is an abundant number, since it is smaller than the sum of its proper divisors (39620180004).

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

22011211020 is a wasteful number, since it uses less digits than its factorization.

22011211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 366853529 (or 366853527 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 22011211020 its reverse (2011211022), we get a palindrome (24022422042).

It can be divided in two parts, 220112 and 11020, that added together give a palindrome (231132).

The spelling of 22011211020 in words is "twenty-two billion, eleven million, two hundred eleven thousand, twenty".