10000001123220 has 96 divisors (see below), whose sum is σ = 28684078577280. Its totient is φ = 2601522135040.

The previous prime is 10000001123209. The next prime is 10000001123237. The reversal of 10000001123220 is 2232110000001.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10000001123196 and 10000001123205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75709396 + ... + 75841364.

It is an arithmetic number, because the mean of its divisors is an integer number (298792485180).

Almost surely, 2^{10000001123220} is an apocalyptic number.

10000001123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10000001123220 is an abundant number, since it is smaller than the sum of its proper divisors (18684077454060).

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

10000001123220 is a wasteful number, since it uses less digits than its factorization.

10000001123220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162825 (or 162823 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 10000001123220 its reverse (2232110000001), we get a palindrome (12232111123221).

The spelling of 10000001123220 in words is "ten trillion, one million, one hundred twenty-three thousand, two hundred twenty".