10201231220 has 24 divisors (see below), whose sum is σ = 21427321608. Its totient is φ = 4079590400.

The previous prime is 10201231199. The next prime is 10201231237. The reversal of 10201231220 is 2213210201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1164447376 + 9036783844 = 34124^2 + 95062^2 .

It is a junction number, because it is equal to n+sod(n) for n = 10201231195 and 10201231204.

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, 40400 + ... + 148440.

It is an arithmetic number, because the mean of its divisors is an integer number (892805067).

Almost surely, 2^10201231220 is an apocalyptic number.

10201231220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10201231220 is an abundant number, since it is smaller than the sum of its proper divisors (11226090388).

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

10201231220 is a wasteful number, since it uses less digits than its factorization.

10201231220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112771 (or 112769 counting only the distinct ones).

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

Adding to 10201231220 its reverse (2213210201), we get a palindrome (12414441421).

The spelling of 10201231220 in words is "ten billion, two hundred one million, two hundred thirty-one thousand, two hundred twenty".