1001122221022 has 64 divisors (see below), whose sum is σ = 1884681437184. Its totient is φ = 387460844640.

The previous prime is 1001122221019. The next prime is 1001122221023. The reversal of 1001122221022 is 2201222211001.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1001122220987 and 1001122221005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001122221023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16006503 + ... + 16068925.

It is an arithmetic number, because the mean of its divisors is an integer number (29448147456).

Almost surely, 2^{1001122221022} is an apocalyptic number.

1001122221022 is a deficient number, since it is larger than the sum of its proper divisors (883559216162).

1001122221022 is a wasteful number, since it uses less digits than its factorization.

1001122221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63133.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1001122221022 its reverse (2201222211001), we get a palindrome (3202344432023).

The spelling of 1001122221022 in words is "one trillion, one billion, one hundred twenty-two million, two hundred twenty-one thousand, twenty-two".