102011200021111 has 4 divisors (see below), whose sum is σ = 102012513203952. Its totient is φ = 102009886838272.

The previous prime is 102011200021063. The next prime is 102011200021121. The reversal of 102011200021111 is 111120002110201.

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 102011200021111 - 2¹³ = 102011200012919 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102011200021091 and 102011200021100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011200021121) 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, 656474890 + ... + 656630263.

It is an arithmetic number, because the mean of its divisors is an integer number (25503128300988).

Almost surely, 2^{102011200021111} is an apocalyptic number.

102011200021111 is a deficient number, since it is larger than the sum of its proper divisors (1313182841).

102011200021111 is an equidigital number, since it uses as much as digits as its factorization.

102011200021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1313182840.

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

Adding to 102011200021111 its reverse (111120002110201), we get a palindrome (213131202131312).

The spelling of 102011200021111 in words is "one hundred two trillion, eleven billion, two hundred million, twenty-one thousand, one hundred eleven".