10200111210 has 48 divisors (see below), whose sum is σ = 26561812680. Its totient is φ = 2715770880.

The previous prime is 10200111209. The next prime is 10200111211. The reversal of 10200111210 is 1211100201.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (10200111209) and next prime (10200111211).

It can be written as a sum of positive squares in 4 ways, for example, as 10038236481 + 161874729 = 100191^2 + 12723^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 10200111192 and 10200111201.

It is not an unprimeable number, because it can be changed into a prime (10200111211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30715 + ... + 146094.

Almost surely, 2^10200111210 is an apocalyptic number.

10200111210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

10200111210 is an abundant number, since it is smaller than the sum of its proper divisors (16361701470).

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

10200111210 is a wasteful number, since it uses less digits than its factorization.

10200111210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177463 (or 177460 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 10200111210 its reverse (1211100201), we get a palindrome (11411211411).

The spelling of 10200111210 in words is "ten billion, two hundred million, one hundred eleven thousand, two hundred ten".