10202021210 has 8 divisors (see below), whose sum is σ = 18363638196. Its totient is φ = 4080808480.

The previous prime is 10202021119. The next prime is 10202021213. The reversal of 10202021210 is 1212020201.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 9242322769 + 959698441 = 96137^2 + 30979^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 10202021191 and 10202021200.

It is not an unprimeable number, because it can be changed into a prime (10202021213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510101051 + ... + 510101070.

Almost surely, 2^10202021210 is an apocalyptic number.

10202021210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10202021210 is a deficient number, since it is larger than the sum of its proper divisors (8161616986).

10202021210 is a wasteful number, since it uses less digits than its factorization.

10202021210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1020202128.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10202021210 its reverse (1212020201), we get a palindrome (11414041411).

The spelling of 10202021210 in words is "ten billion, two hundred two million, twenty-one thousand, two hundred ten".