20101200210 has 96 divisors (see below), whose sum is σ = 64323866880. Its totient is φ = 4241130624.

The previous prime is 20101200179. The next prime is 20101200241. The reversal of 20101200210 is 1200210102.

It is an interprime number because it is at equal distance from previous prime (20101200179) and next prime (20101200241).

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 = 20101200192 and 20101200201.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1218990 + ... + 1235369.

It is an arithmetic number, because the mean of its divisors is an integer number (670040280).

Almost surely, 2^20101200210 is an apocalyptic number.

20101200210 is an abundant number, since it is smaller than the sum of its proper divisors (44222666670).

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

20101200210 is a wasteful number, since it uses less digits than its factorization.

20101200210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454392 (or 2454389 counting only the distinct ones).

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

Adding to 20101200210 its reverse (1200210102), we get a palindrome (21301410312).

The spelling of 20101200210 in words is "twenty billion, one hundred one million, two hundred thousand, two hundred ten".