222202121000020 has 48 divisors (see below), whose sum is σ = 533293125700608. Its totient is φ = 76182436442880.

The previous prime is 222202121000011. The next prime is 222202121000029. The reversal of 222202121000020 is 20000121202222.

It is an interprime number because it is at equal distance from previous prime (222202121000011) and next prime (222202121000029).

It is a junction number, because it is equal to n+sod(n) for n = 222202120999958 and 222202121000003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222202121000029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2606596 + ... + 21241435.

It is an arithmetic number, because the mean of its divisors is an integer number (11110273452096).

Almost surely, 2^{222202121000020} is an apocalyptic number.

222202121000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

222202121000020 is an abundant number, since it is smaller than the sum of its proper divisors (311091004700588).

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

222202121000020 is a wasteful number, since it uses less digits than its factorization.

222202121000020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23914600 (or 23914598 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 222202121000020 its reverse (20000121202222), we get a palindrome (242202242202242).

The spelling of 222202121000020 in words is "two hundred twenty-two trillion, two hundred two billion, one hundred twenty-one million, twenty", and thus it is an aban number.