10055311220 has 24 divisors (see below), whose sum is σ = 21176673000. Its totient is φ = 4010596992.

The previous prime is 10055311199. The next prime is 10055311229. The reversal of 10055311220 is 2211355001.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 52911076 + 10002400144 = 7274^2 + 100012^2 .

It is a super-2 number, since 2×10055311220² (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 = 10055311192 and 10055311201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10055311229) 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, 713315 + ... + 727274.

It is an arithmetic number, because the mean of its divisors is an integer number (882361375).

Almost surely, 2^10055311220 is an apocalyptic number.

10055311220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10055311220 is an abundant number, since it is smaller than the sum of its proper divisors (11121361780).

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

10055311220 is a wasteful number, since it uses less digits than its factorization.

10055311220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1440947 (or 1440945 counting only the distinct ones).

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

Adding to 10055311220 its reverse (2211355001), we get a palindrome (12266666221).

The spelling of 10055311220 in words is "ten billion, fifty-five million, three hundred eleven thousand, two hundred twenty".