102001021201111 has 4 divisors (see below), whose sum is σ = 102954301773192. Its totient is φ = 101047740629032.

The previous prime is 102001021201109. The next prime is 102001021201133. The reversal of 102001021201111 is 111102120100201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 102001021201111 - 2¹ = 102001021201109 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102001021201091 and 102001021201100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102001021201141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476640285880 + ... + 476640286093.

It is an arithmetic number, because the mean of its divisors is an integer number (25738575443298).

Almost surely, 2^{102001021201111} is an apocalyptic number.

102001021201111 is a deficient number, since it is larger than the sum of its proper divisors (953280572081).

102001021201111 is an equidigital number, since it uses as much as digits as its factorization.

102001021201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 953280572080.

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

Adding to 102001021201111 its reverse (111102120100201), we get a palindrome (213103141301312).

The spelling of 102001021201111 in words is "one hundred two trillion, one billion, twenty-one million, two hundred one thousand, one hundred eleven".