1001211122112 has 56 divisors (see below), whose sum is σ = 2710643312256. Its totient is φ = 325975711488.

The previous prime is 1001211122033. The next prime is 1001211122167. The reversal of 1001211122112 is 2112211121001.

It is a happy number.

It is a super-2 number, since 2×1001211122112² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1001211122091 and 1001211122100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60627108 + ... + 60643619.

Almost surely, 2^{1001211122112} is an apocalyptic number.

1001211122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1001211122112 is an abundant number, since it is smaller than the sum of its proper divisors (1709432190144).

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

1001211122112 is a wasteful number, since it uses less digits than its factorization.

1001211122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121270785 (or 121270775 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1001211122112 its reverse (2112211121001), we get a palindrome (3113422243113).

The spelling of 1001211122112 in words is "one trillion, one billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twelve".