102120210100111 has 32 divisors (see below), whose sum is σ = 117360826813440. Its totient is φ = 87044060353536.

The previous prime is 102120210100109. The next prime is 102120210100127. The reversal of 102120210100111 is 111001012021201.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 102120210100111 - 2¹ = 102120210100109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102120210100091 and 102120210100100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102120210101111) 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, 5767213720 + ... + 5767231426.

It is an arithmetic number, because the mean of its divisors is an integer number (3667525837920).

Almost surely, 2^{102120210100111} is an apocalyptic number.

102120210100111 is a deficient number, since it is larger than the sum of its proper divisors (15240616713329).

102120210100111 is a wasteful number, since it uses less digits than its factorization.

102120210100111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24343.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102120210100111 its reverse (111001012021201), we get a palindrome (213121222121312).

The spelling of 102120210100111 in words is "one hundred two trillion, one hundred twenty billion, two hundred ten million, one hundred thousand, one hundred eleven".