10021003220 has 12 divisors (see below), whose sum is σ = 21044106804. Its totient is φ = 4008401280.

The previous prime is 10021003219. The next prime is 10021003231. The reversal of 10021003220 is 2230012001.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 7860240964 + 2160762256 = 88658^2 + 46484^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 250525061 + ... + 250525100.

It is an arithmetic number, because the mean of its divisors is an integer number (1753675567).

Almost surely, 2^10021003220 is an apocalyptic number.

10021003220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10021003220 is an abundant number, since it is smaller than the sum of its proper divisors (11023103584).

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

10021003220 is a wasteful number, since it uses less digits than its factorization.

10021003220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501050170 (or 501050168 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 10021003220 its reverse (2230012001), we get a palindrome (12251015221).

The spelling of 10021003220 in words is "ten billion, twenty-one million, three thousand, two hundred twenty".