102111100120205 has 16 divisors (see below), whose sum is σ = 133697280950208. Its totient is φ = 74248969344000.

The previous prime is 102111100120121. The next prime is 102111100120223. The reversal of 102111100120205 is 502021001111201.

It is not a de Polignac number, because 102111100120205 - 2²⁶ = 102111033011341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 170309591 + ... + 170908100.

It is an arithmetic number, because the mean of its divisors is an integer number (8356080059388).

Almost surely, 2^{102111100120205} is an apocalyptic number.

It is an amenable number.

102111100120205 is a deficient number, since it is larger than the sum of its proper divisors (31586180830003).

102111100120205 is a wasteful number, since it uses less digits than its factorization.

102111100120205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341223148.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 102111100120205 its reverse (502021001111201), we get a palindrome (604132101231406).

The spelling of 102111100120205 in words is "one hundred two trillion, one hundred eleven billion, one hundred million, one hundred twenty thousand, two hundred five".