102100212111111 has 32 divisors (see below), whose sum is σ = 144040468320000. Its totient is φ = 64150915046400.

The previous prime is 102100212111083. The next prime is 102100212111143. The reversal of 102100212111111 is 111111212001201.

It is not a de Polignac number, because 102100212111111 - 2⁶ = 102100212111047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100212111811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 13801015 + ... + 19866263.

It is an arithmetic number, because the mean of its divisors is an integer number (4501264635000).

Almost surely, 2^{102100212111111} is an apocalyptic number.

102100212111111 is a deficient number, since it is larger than the sum of its proper divisors (41940256208889).

102100212111111 is a wasteful number, since it uses less digits than its factorization.

102100212111111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6066799.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 102100212111111 its reverse (111111212001201), we get a palindrome (213211424112312).

The spelling of 102100212111111 in words is "one hundred two trillion, one hundred billion, two hundred twelve million, one hundred eleven thousand, one hundred eleven".