1220023311001 has 8 divisors (see below), whose sum is σ = 1341933981408. Its totient is φ = 1109112099700.

The previous prime is 1220023310969. The next prime is 1220023311053. The reversal of 1220023311001 is 1001133200221.

It is not a de Polignac number, because 1220023311001 - 2⁵ = 1220023310969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220023311061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 458309455 + ... + 458312116.

It is an arithmetic number, because the mean of its divisors is an integer number (167741747676).

Almost surely, 2^{1220023311001} is an apocalyptic number.

1220023311001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220023311001 is a deficient number, since it is larger than the sum of its proper divisors (121910670407).

1220023311001 is an frugal number, since it uses more digits than its factorization.

1220023311001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916621604 (or 916621582 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 1220023311001 its reverse (1001133200221), we get a palindrome (2221156511222).

The spelling of 1220023311001 in words is "one trillion, two hundred twenty billion, twenty-three million, three hundred eleven thousand, one".