22003121020 has 12 divisors (see below), whose sum is σ = 46206554184. Its totient is φ = 8801248400.

The previous prime is 22003120999. The next prime is 22003121033. The reversal of 22003121020 is 2012130022.

It is a congruent number.

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, 550078006 + ... + 550078045.

It is an arithmetic number, because the mean of its divisors is an integer number (3850546182).

Almost surely, 2^22003121020 is an apocalyptic number.

22003121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22003121020 is an abundant number, since it is smaller than the sum of its proper divisors (24203433164).

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

22003121020 is a wasteful number, since it uses less digits than its factorization.

22003121020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100156060 (or 1100156058 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 22003121020 its reverse (2012130022), we get a palindrome (24015251042).

The spelling of 22003121020 in words is "twenty-two billion, three million, one hundred twenty-one thousand, twenty".