20010122122220 has 12 divisors (see below), whose sum is σ = 42021256456704. Its totient is φ = 8004048848880.

The previous prime is 20010122122217. The next prime is 20010122122231. The reversal of 20010122122220 is 2222122101002.

It is a happy 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, 500253053036 + ... + 500253053075.

It is an arithmetic number, because the mean of its divisors is an integer number (3501771371392).

Almost surely, 2^{20010122122220} is an apocalyptic number.

20010122122220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20010122122220 is an abundant number, since it is smaller than the sum of its proper divisors (22011134334484).

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

20010122122220 is a wasteful number, since it uses less digits than its factorization.

20010122122220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000506106120 (or 1000506106118 counting only the distinct ones).

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

Adding to 20010122122220 its reverse (2222122101002), we get a palindrome (22232244223222).

The spelling of 20010122122220 in words is "twenty trillion, ten billion, one hundred twenty-two million, one hundred twenty-two thousand, two hundred twenty".