202102111121111 has 8 divisors (see below), whose sum is σ = 203445075609600. Its totient is φ = 200759206368600.

The previous prime is 202102111121107. The next prime is 202102111121177. The reversal of 202102111121111 is 111121111201202.

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

It is a cyclic number.

It is not a de Polignac number, because 202102111121111 - 2² = 202102111121107 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 202102111121111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202102111121411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8134751 + ... + 21688208.

It is an arithmetic number, because the mean of its divisors is an integer number (25430634451200).

Almost surely, 2^{202102111121111} is an apocalyptic number.

202102111121111 is a deficient number, since it is larger than the sum of its proper divisors (1342964488489).

202102111121111 is a wasteful number, since it uses less digits than its factorization.

202102111121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29867989.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 202102111121111 its reverse (111121111201202), we get a palindrome (313223222322313).

The spelling of 202102111121111 in words is "two hundred two trillion, one hundred two billion, one hundred eleven million, one hundred twenty-one thousand, one hundred eleven".