101213232220 has 96 divisors (see below), whose sum is σ = 220848001920. Its totient is φ = 38936125440.

The previous prime is 101213232217. The next prime is 101213232247. The reversal of 101213232220 is 22232312101.

It is a super-2 number, since 2×101213232220² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 19338724 + ... + 19343956.

It is an arithmetic number, because the mean of its divisors is an integer number (2300500020).

Almost surely, 2^101213232220 is an apocalyptic number.

101213232220 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 101213232220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110424000960).

101213232220 is an abundant number, since it is smaller than the sum of its proper divisors (119634769700).

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

101213232220 is a wasteful number, since it uses less digits than its factorization.

101213232220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5615 (or 5613 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 101213232220 its reverse (22232312101), we get a palindrome (123445544321).

The spelling of 101213232220 in words is "one hundred one billion, two hundred thirteen million, two hundred thirty-two thousand, two hundred twenty".