10213221020 has 24 divisors (see below), whose sum is σ = 21529325664. Its totient is φ = 4069752896.

The previous prime is 10213221017. The next prime is 10213221023. The reversal of 10213221020 is 2012231201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10213221017) and next prime (10213221023).

It is a junction number, because it is equal to n+sod(n) for n = 10213220986 and 10213221004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10213221023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 965579 + ... + 976098.

It is an arithmetic number, because the mean of its divisors is an integer number (897055236).

Almost surely, 2^10213221020 is an apocalyptic number.

10213221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10213221020 is an abundant number, since it is smaller than the sum of its proper divisors (11316104644).

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

10213221020 is a wasteful number, since it uses less digits than its factorization.

10213221020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1941949 (or 1941947 counting only the distinct ones).

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

Adding to 10213221020 its reverse (2012231201), we get a palindrome (12225452221).

The spelling of 10213221020 in words is "ten billion, two hundred thirteen million, two hundred twenty-one thousand, twenty".