202111112102 has 4 divisors (see below), whose sum is σ = 303166668156. Its totient is φ = 101055556050.

The previous prime is 202111112101. The next prime is 202111112117. The reversal of 202111112102 is 201211111202.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202111112101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50527778024 + ... + 50527778027.

It is an arithmetic number, because the mean of its divisors is an integer number (75791667039).

Almost surely, 2^202111112102 is an apocalyptic number.

202111112102 is a deficient number, since it is larger than the sum of its proper divisors (101055556054).

202111112102 is a wasteful number, since it uses less digits than its factorization.

202111112102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101055556053.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 202111112102 its reverse (201211111202), we get a palindrome (403322223304).

The spelling of 202111112102 in words is "two hundred two billion, one hundred eleven million, one hundred twelve thousand, one hundred two".