1001122211122 has 48 divisors (see below), whose sum is σ = 1665814491936. Its totient is φ = 450866908800.

The previous prime is 1001122211099. The next prime is 1001122211137. The reversal of 1001122211122 is 2211122211001.

It is a junction number, because it is equal to n+sod(n) for n = 1001122211096 and 1001122211105.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110117797 + ... + 110126887.

It is an arithmetic number, because the mean of its divisors is an integer number (34704468582).

Almost surely, 2^{1001122211122} is an apocalyptic number.

1001122211122 is a deficient number, since it is larger than the sum of its proper divisors (664692280814).

1001122211122 is a wasteful number, since it uses less digits than its factorization.

1001122211122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13255 (or 13244 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1001122211122 its reverse (2211122211001), we get a palindrome (3212244422123).

The spelling of 1001122211122 in words is "one trillion, one billion, one hundred twenty-two million, two hundred eleven thousand, one hundred twenty-two".