109220621440 has 128 divisors (see below), whose sum is σ = 314112182400. Its totient is φ = 35476144128.

The previous prime is 109220621371. The next prime is 109220621441. The reversal of 109220621440 is 44126022901.

It is a tau number, because it is divible by the number of its divisors (128).

It is not an unprimeable number, because it can be changed into a prime (109220621441) 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, 556449 + ... + 726688.

It is an arithmetic number, because the mean of its divisors is an integer number (2454001425).

Almost surely, 2^109220621440 is an apocalyptic number.

109220621440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

109220621440 is an abundant number, since it is smaller than the sum of its proper divisors (204891560960).

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

109220621440 is a wasteful number, since it uses less digits than its factorization.

109220621440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1283182 (or 1283170 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The spelling of 109220621440 in words is "one hundred nine billion, two hundred twenty million, six hundred twenty-one thousand, four hundred forty".