102021101121111 has 16 divisors (see below), whose sum is σ = 136061380627200. Its totient is φ = 67997445228288.

The previous prime is 102021101121109. The next prime is 102021101121119. The reversal of 102021101121111 is 111121101120201.

It is not a de Polignac number, because 102021101121111 - 2¹ = 102021101121109 is a prime.

It is a super-3 number, since 3×102021101121111³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102021101121119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1097107960 + ... + 1097200946.

It is an arithmetic number, because the mean of its divisors is an integer number (8503836289200).

Almost surely, 2^{102021101121111} is an apocalyptic number.

102021101121111 is a deficient number, since it is larger than the sum of its proper divisors (34040279506089).

102021101121111 is an equidigital number, since it uses as much as digits as its factorization.

102021101121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178438.

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

Adding to 102021101121111 its reverse (111121101120201), we get a palindrome (213142202241312).

The spelling of 102021101121111 in words is "one hundred two trillion, twenty-one billion, one hundred one million, one hundred twenty-one thousand, one hundred eleven".