10200210021 has 12 divisors (see below), whose sum is σ = 15509091520. Its totient is φ = 6442237800.

The previous prime is 10200210019. The next prime is 10200210067. The reversal of 10200210021 is 12001200201.

It is not a de Polignac number, because 10200210021 - 2¹ = 10200210019 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10200209985 and 10200210012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10200210091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 29825005 + ... + 29825346.

Almost surely, 2^10200210021 is an apocalyptic number.

It is an amenable number.

10200210021 is a deficient number, since it is larger than the sum of its proper divisors (5308881499).

10200210021 is a wasteful number, since it uses less digits than its factorization.

10200210021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59650376 (or 59650373 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10200210021 its reverse (12001200201), we get a palindrome (22201410222).

The spelling of 10200210021 in words is "ten billion, two hundred million, two hundred ten thousand, twenty-one".