1001221000122 has 32 divisors (see below), whose sum is σ = 2288606552064. Its totient is φ = 286050466800.

The previous prime is 1001221000121. The next prime is 1001221000141. The reversal of 1001221000122 is 2210001221001.

It is a junction number, because it is equal to n+sod(n) for n = 1001221000098 and 1001221000107.

It is not an unprimeable number, because it can be changed into a prime (1001221000121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 452347 + ... + 1485617.

It is an arithmetic number, because the mean of its divisors is an integer number (71518954752).

Almost surely, 2^{1001221000122} is an apocalyptic number.

1001221000122 is an abundant number, since it is smaller than the sum of its proper divisors (1287385551942).

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

1001221000122 is a wasteful number, since it uses less digits than its factorization.

1001221000122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056354.

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

Adding to 1001221000122 its reverse (2210001221001), we get a palindrome (3211222221123).

It can be divided in two parts, 1001 and 221000122, that multiplied together give a palindrome (221221122122).

The spelling of 1001221000122 in words is "one trillion, one billion, two hundred twenty-one million, one hundred twenty-two", and thus it is an aban number.