10123221020 has 24 divisors (see below), whose sum is σ = 23191379568. Its totient is φ = 3681171200.

The previous prime is 10123221019. The next prime is 10123221037. The reversal of 10123221020 is 2012232101.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 10123220986 and 10123221004.

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, 23007101 + ... + 23007540.

It is an arithmetic number, because the mean of its divisors is an integer number (966307482).

Almost surely, 2^10123221020 is an apocalyptic number.

10123221020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10123221020 is an abundant number, since it is smaller than the sum of its proper divisors (13068158548).

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

10123221020 is a wasteful number, since it uses less digits than its factorization.

10123221020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46014661 (or 46014659 counting only the distinct ones).

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

Adding to 10123221020 its reverse (2012232101), we get a palindrome (12135453121).

The spelling of 10123221020 in words is "ten billion, one hundred twenty-three million, two hundred twenty-one thousand, twenty".