10221000420 has 24 divisors (see below), whose sum is σ = 28618801344. Its totient is φ = 2725600096.

The previous prime is 10221000409. The next prime is 10221000443. The reversal of 10221000420 is 2400012201.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 10221000396 and 10221000405.

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, 85174944 + ... + 85175063.

It is an arithmetic number, because the mean of its divisors is an integer number (1192450056).

Almost surely, 2^10221000420 is an apocalyptic number.

10221000420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221000420 is an abundant number, since it is smaller than the sum of its proper divisors (18397800924).

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

10221000420 is a wasteful number, since it uses less digits than its factorization.

10221000420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170350019 (or 170350017 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 10221000420 its reverse (2400012201), we get a palindrome (12621012621).

The spelling of 10221000420 in words is "ten billion, two hundred twenty-one million, four hundred twenty", and thus it is an aban number.