103013221212 has 144 divisors (see below), whose sum is σ = 286264742400. Its totient is φ = 30975281280.

The previous prime is 103013221193. The next prime is 103013221279. The reversal of 103013221212 is 212122310301.

It is a super-2 number, since 2×103013221212² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 54822489 + ... + 54824367.

It is an arithmetic number, because the mean of its divisors is an integer number (1987949600).

Almost surely, 2^103013221212 is an apocalyptic number.

103013221212 is a gapful number since it is divisible by the number (12) 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 103013221212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (143132371200).

103013221212 is an abundant number, since it is smaller than the sum of its proper divisors (183251521188).

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

103013221212 is a wasteful number, since it uses less digits than its factorization.

103013221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2896 (or 2891 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 103013221212 its reverse (212122310301), we get a palindrome (315135531513).

The spelling of 103013221212 in words is "one hundred three billion, thirteen million, two hundred twenty-one thousand, two hundred twelve".