1220440234101 has 32 divisors (see below), whose sum is σ = 1782488512512. Its totient is φ = 736622290560.

The previous prime is 1220440234081. The next prime is 1220440234157. The reversal of 1220440234101 is 1014320440221.

It is not a de Polignac number, because 1220440234101 - 2²¹ = 1220438136949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220440234501) 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 31 ways as a sum of consecutive naturals, for example, 11339326 + ... + 11446448.

It is an arithmetic number, because the mean of its divisors is an integer number (55702766016).

Almost surely, 2^{1220440234101} is an apocalyptic number.

1220440234101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1220440234101 is a deficient number, since it is larger than the sum of its proper divisors (562048278411).

1220440234101 is a wasteful number, since it uses less digits than its factorization.

1220440234101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108553.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1220440234101 its reverse (1014320440221), we get a palindrome (2234760674322).

It can be divided in two parts, 1220440 and 234101, that added together give a palindrome (1454541).

The spelling of 1220440234101 in words is "one trillion, two hundred twenty billion, four hundred forty million, two hundred thirty-four thousand, one hundred one".