22001211020 has 12 divisors (see below), whose sum is σ = 46202543184. Its totient is φ = 8800484400.

The previous prime is 22001211019. The next prime is 22001211047. The reversal of 22001211020 is 2011210022.

It is a happy number.

It is a super-3 number, since 3×22001211020³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22001210992 and 22001211010.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550030256 + ... + 550030295.

It is an arithmetic number, because the mean of its divisors is an integer number (3850211932).

Almost surely, 2^22001211020 is an apocalyptic number.

22001211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22001211020 is an abundant number, since it is smaller than the sum of its proper divisors (24201332164).

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

22001211020 is a wasteful number, since it uses less digits than its factorization.

22001211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1100060560 (or 1100060558 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 22001211020 its reverse (2011210022), we get a palindrome (24012421042).

The spelling of 22001211020 in words is "twenty-two billion, one million, two hundred eleven thousand, twenty".