10202111208 has 24 divisors (see below), whose sum is σ = 27630718050. Its totient is φ = 3400703712.

The previous prime is 10202111203. The next prime is 10202111209. The reversal of 10202111208 is 80211120201.

It can be written as a sum of positive squares in only one way, i.e., 5919455844 + 4282655364 = 76938^2 + 65442^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (10202111203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 70847923 + ... + 70848066.

Almost surely, 2^10202111208 is an apocalyptic number.

10202111208 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

10202111208 is an abundant number, since it is smaller than the sum of its proper divisors (17428606842).

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

10202111208 is a wasteful number, since it uses less digits than its factorization.

10202111208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141696001 (or 141695994 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10202111208 its reverse (80211120201), we get a palindrome (90413231409).

The spelling of 10202111208 in words is "ten billion, two hundred two million, one hundred eleven thousand, two hundred eight".