102121212121111 has 8 divisors (see below), whose sum is σ = 102260635218000. Its totient is φ = 101981828151360.

The previous prime is 102121212121109. The next prime is 102121212121151. The reversal of 102121212121111 is 111121212121201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 102121212121111 - 2¹ = 102121212121109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121212121151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4556350 + ... + 15000091.

It is an arithmetic number, because the mean of its divisors is an integer number (12782579402250).

Almost surely, 2^{102121212121111} is an apocalyptic number.

102121212121111 is a deficient number, since it is larger than the sum of its proper divisors (139423096889).

102121212121111 is an equidigital number, since it uses as much as digits as its factorization.

102121212121111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19563569.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 102121212121111 its reverse (111121212121201), we get a palindrome (213242424242312).

The spelling of 102121212121111 in words is "one hundred two trillion, one hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred eleven".