101230011220 has 24 divisors (see below), whose sum is σ = 228935564424. Its totient is φ = 37377234816.

The previous prime is 101230011217. The next prime is 101230011227. The reversal of 101230011220 is 22110032101.

It can be written as a sum of positive squares in 4 ways, for example, as 1497844804 + 99732166416 = 38702^2 + 315804^2 .

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a self number, because there is not a number n which added to its sum of digits gives 101230011220.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101230011227) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 194672839 + ... + 194673358.

It is an arithmetic number, because the mean of its divisors is an integer number (9538981851).

Almost surely, 2^101230011220 is an apocalyptic number.

101230011220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

101230011220 is an abundant number, since it is smaller than the sum of its proper divisors (127705553204).

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

101230011220 is a wasteful number, since it uses less digits than its factorization.

101230011220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389346219 (or 389346217 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 101230011220 its reverse (22110032101), we get a palindrome (123340043321).

The spelling of 101230011220 in words is "one hundred one billion, two hundred thirty million, eleven thousand, two hundred twenty".