1122221220001 has 16 divisors (see below), whose sum is σ = 1312604406784. Its totient is φ = 939362662224.

The previous prime is 1122221219983. The next prime is 1122221220019. The reversal of 1122221220001 is 1000221222211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1122221219983) and next prime (1122221220019).

It is not a de Polignac number, because 1122221220001 - 2⁹ = 1122221219489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1122221220061) 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, 1326346 + ... + 2000908.

It is an arithmetic number, because the mean of its divisors is an integer number (82037775424).

Almost surely, 2^{1122221220001} is an apocalyptic number.

It is an amenable number.

1122221220001 is a deficient number, since it is larger than the sum of its proper divisors (190383186783).

1122221220001 is an equidigital number, since it uses as much as digits as its factorization.

1122221220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680140.

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

Adding to 1122221220001 its reverse (1000221222211), we get a palindrome (2122442442212).

The spelling of 1122221220001 in words is "one trillion, one hundred twenty-two billion, two hundred twenty-one million, two hundred twenty thousand, one".