10212421020 has 24 divisors (see below), whose sum is σ = 28594779024. Its totient is φ = 2723312256.

The previous prime is 10212421007. The next prime is 10212421049. The reversal of 10212421020 is 2012421201.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 85103449 + ... + 85103568.

It is an arithmetic number, because the mean of its divisors is an integer number (1191449126).

Almost surely, 2^10212421020 is an apocalyptic number.

10212421020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10212421020 is an abundant number, since it is smaller than the sum of its proper divisors (18382358004).

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

10212421020 is a wasteful number, since it uses less digits than its factorization.

10212421020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170207029 (or 170207027 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 10212421020 its reverse (2012421201), we get a palindrome (12224842221).

The spelling of 10212421020 in words is "ten billion, two hundred twelve million, four hundred twenty-one thousand, twenty".