102100120011111 has 32 divisors (see below), whose sum is σ = 145947011834880. Its totient is φ = 63323602239744.

The previous prime is 102100120011107. The next prime is 102100120011133. The reversal of 102100120011111 is 111110021001201.

It is not a de Polignac number, because 102100120011111 - 2² = 102100120011107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102100120011161) 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, 872371 + ... + 14316468.

It is an arithmetic number, because the mean of its divisors is an integer number (4560844119840).

Almost surely, 2^{102100120011111} is an apocalyptic number.

102100120011111 is a deficient number, since it is larger than the sum of its proper divisors (43846891823769).

102100120011111 is a wasteful number, since it uses less digits than its factorization.

102100120011111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15191535.

The product of its (nonzero) digits is 4, while the sum is 12.

Adding to 102100120011111 its reverse (111110021001201), we get a palindrome (213210141012312).

The spelling of 102100120011111 in words is "one hundred two trillion, one hundred billion, one hundred twenty million, eleven thousand, one hundred eleven".