102123111432111 has 128 divisors (see below), whose sum is σ = 179635173064704. Its totient is φ = 50033248129920.

The previous prime is 102123111432107. The next prime is 102123111432149. The reversal of 102123111432111 is 111234111321201.

It is not a de Polignac number, because 102123111432111 - 2² = 102123111432107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102123111432191) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 221582236 + ... + 222042638.

It is an arithmetic number, because the mean of its divisors is an integer number (1403399789568).

Almost surely, 2^{102123111432111} is an apocalyptic number.

102123111432111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

102123111432111 is a deficient number, since it is larger than the sum of its proper divisors (77512061632593).

102123111432111 is a wasteful number, since it uses less digits than its factorization.

102123111432111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 461033.

The product of its (nonzero) digits is 288, while the sum is 24.

Adding to 102123111432111 its reverse (111234111321201), we get a palindrome (213357222753312).

The spelling of 102123111432111 in words is "one hundred two trillion, one hundred twenty-three billion, one hundred eleven million, four hundred thirty-two thousand, one hundred eleven".