100220131220 has 24 divisors (see below), whose sum is σ = 229595210208. Its totient is φ = 36443684000.

The previous prime is 100220131217. The next prime is 100220131223. The reversal of 100220131220 is 22131022001.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (100220131217) and next prime (100220131223).

It is a junction number, because it is equal to n+sod(n) for n = 100220131195 and 100220131204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100220131223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 227772806 + ... + 227773245.

It is an arithmetic number, because the mean of its divisors is an integer number (9566467092).

Almost surely, 2^100220131220 is an apocalyptic number.

100220131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

100220131220 is an abundant number, since it is smaller than the sum of its proper divisors (129375078988).

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

100220131220 is a wasteful number, since it uses less digits than its factorization.

100220131220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455546071 (or 455546069 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 100220131220 its reverse (22131022001), we get a palindrome (122351153221).

The spelling of 100220131220 in words is "one hundred billion, two hundred twenty million, one hundred thirty-one thousand, two hundred twenty".