10550131220 has 24 divisors (see below), whose sum is σ = 22195801824. Its totient is φ = 4212333216.

The previous prime is 10550131213. The next prime is 10550131259. The reversal of 10550131220 is 2213105501.

It is a happy number.

It is a super-2 number, since 2×10550131220² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 10550131192 and 10550131201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 471242 + ... + 493121.

It is an arithmetic number, because the mean of its divisors is an integer number (924825076).

Almost surely, 2^10550131220 is an apocalyptic number.

10550131220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10550131220 is an abundant number, since it is smaller than the sum of its proper divisors (11645670604).

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

10550131220 is a wasteful number, since it uses less digits than its factorization.

10550131220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964919 (or 964917 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 20.

Adding to 10550131220 its reverse (2213105501), we get a palindrome (12763236721).

The spelling of 10550131220 in words is "ten billion, five hundred fifty million, one hundred thirty-one thousand, two hundred twenty".