1001012200122 has 128 divisors (see below), whose sum is σ = 2335285831680. Its totient is φ = 282846816000.

The previous prime is 1001012200109. The next prime is 1001012200147. The reversal of 1001012200122 is 2210022101001.

It is a junction number, because it is equal to n+sod(n) for n = 1001012200098 and 1001012200107.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 54568672 + ... + 54587012.

It is an arithmetic number, because the mean of its divisors is an integer number (18244420560).

Almost surely, 2^{1001012200122} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1001012200122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1167642915840).

1001012200122 is an abundant number, since it is smaller than the sum of its proper divisors (1334273631558).

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

1001012200122 is a wasteful number, since it uses less digits than its factorization.

1001012200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19060.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1001012200122 its reverse (2210022101001), we get a palindrome (3211034301123).

The spelling of 1001012200122 in words is "one trillion, one billion, twelve million, two hundred thousand, one hundred twenty-two".