22012121020220 has 24 divisors (see below), whose sum is σ = 46396027785408. Its totient is φ = 8772358190400.

The previous prime is 22012121020193. The next prime is 22012121020229. The reversal of 22012121020220 is 2202012121022.

It is a happy number.

It is a super-2 number, since 2×22012121020220² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012121020229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2030633051 + ... + 2030643890.

It is an arithmetic number, because the mean of its divisors is an integer number (1933167824392).

Almost surely, 2^{22012121020220} is an apocalyptic number.

22012121020220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22012121020220 is an abundant number, since it is smaller than the sum of its proper divisors (24383906765188).

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

22012121020220 is a wasteful number, since it uses less digits than its factorization.

22012121020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4061277221 (or 4061277219 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22012121020220 its reverse (2202012121022), we get a palindrome (24214133141242).

The spelling of 22012121020220 in words is "twenty-two trillion, twelve billion, one hundred twenty-one million, twenty thousand, two hundred twenty".