1000221122112 has 56 divisors (see below), whose sum is σ = 2647680252000. Its totient is φ = 333248065536.

The previous prime is 1000221122101. The next prime is 1000221122191. The reversal of 1000221122112 is 2112211220001.

It is a junction number, because it is equal to n+sod(n) for n = 1000221122091 and 1000221122100.

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, 837937 + ... + 1643952.

It is an arithmetic number, because the mean of its divisors is an integer number (47280004500).

Almost surely, 2^{1000221122112} is an apocalyptic number.

1000221122112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1000221122112 is an abundant number, since it is smaller than the sum of its proper divisors (1647459129888).

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

1000221122112 is a wasteful number, since it uses less digits than its factorization.

1000221122112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484003 (or 2483993 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1000221122112 its reverse (2112211220001), we get a palindrome (3112432342113).

The spelling of 1000221122112 in words is "one trillion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred twelve".