103211212240 has 80 divisors (see below), whose sum is σ = 245944258560. Its totient is φ = 40257008640.

The previous prime is 103211212129. The next prime is 103211212241. The reversal of 103211212240 is 42212112301.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (103211212241) 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, 7494481 + ... + 7508239.

It is an arithmetic number, because the mean of its divisors is an integer number (3074303232).

Almost surely, 2^103211212240 is an apocalyptic number.

103211212240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 103211212240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122972129280).

103211212240 is an abundant number, since it is smaller than the sum of its proper divisors (142733046320).

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

103211212240 is a wasteful number, since it uses less digits than its factorization.

103211212240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16100 (or 16094 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 103211212240 its reverse (42212112301), we get a palindrome (145423324541).

The spelling of 103211212240 in words is "one hundred three billion, two hundred eleven million, two hundred twelve thousand, two hundred forty".