103121220444 has 96 divisors (see below), whose sum is σ = 269928288000. Its totient is φ = 30365544960.

The previous prime is 103121220443. The next prime is 103121220467. The reversal of 103121220444 is 444022121301.

It is a super-2 number, since 2×103121220444² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103121220443) 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, 3938107 + ... + 3964205.

It is an arithmetic number, because the mean of its divisors is an integer number (2811753000).

Almost surely, 2^103121220444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103121220444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (134964144000).

103121220444 is an abundant number, since it is smaller than the sum of its proper divisors (166807067556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

103121220444 is a wasteful number, since it uses less digits than its factorization.

103121220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26963 (or 26961 counting only the distinct ones).

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

Adding to 103121220444 its reverse (444022121301), we get a palindrome (547143341745).

The spelling of 103121220444 in words is "one hundred three billion, one hundred twenty-one million, two hundred twenty thousand, four hundred forty-four".