10021000122220 has 24 divisors (see below), whose sum is σ = 21183465165408. Its totient is φ = 3981854352000.

The previous prime is 10021000122187. The next prime is 10021000122223. The reversal of 10021000122220 is 2222100012001.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 10021000122220.

It is not an unprimeable number, because it can be changed into a prime (10021000122223) 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, 1659102961 + ... + 1659109000.

It is an arithmetic number, because the mean of its divisors is an integer number (882644381892).

Almost surely, 2^{10021000122220} is an apocalyptic number.

10021000122220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021000122220 is an abundant number, since it is smaller than the sum of its proper divisors (11162465043188).

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

10021000122220 is a wasteful number, since it uses less digits than its factorization.

10021000122220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3318212121 (or 3318212119 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10021000122220 its reverse (2222100012001), we get a palindrome (12243100134221).

The spelling of 10021000122220 in words is "ten trillion, twenty-one billion, one hundred twenty-two thousand, two hundred twenty".