1220122000001 has 4 divisors (see below), whose sum is σ = 1291893882372. Its totient is φ = 1148350117632.

The previous prime is 1220121999989. The next prime is 1220122000003. The reversal of 1220122000001 is 1000002210221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 809496078400 + 410625921601 = 899720^2 + 640801^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220122000001 - 2⁶ = 1220121999937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220122000003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35885941160 + ... + 35885941193.

It is an arithmetic number, because the mean of its divisors is an integer number (322973470593).

Almost surely, 2^{1220122000001} is an apocalyptic number.

It is an amenable number.

1220122000001 is a deficient number, since it is larger than the sum of its proper divisors (71771882371).

1220122000001 is an equidigital number, since it uses as much as digits as its factorization.

1220122000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71771882370.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1220122000001 its reverse (1000002210221), we get a palindrome (2220124210222).

The spelling of 1220122000001 in words is "one trillion, two hundred twenty billion, one hundred twenty-two million, one", and thus it is an aban number.