102112211021 has 8 divisors (see below), whose sum is σ = 105418521600. Its totient is φ = 98806673520.

The previous prime is 102112211009. The next prime is 102112211029. The reversal of 102112211021 is 120112211201.

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 102112211021 - 2¹⁴ = 102112194637 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 102112210987 and 102112211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102112211029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81395 + ... + 459183.

It is an arithmetic number, because the mean of its divisors is an integer number (13177315200).

Almost surely, 2^102112211021 is an apocalyptic number.

It is an amenable number.

102112211021 is a deficient number, since it is larger than the sum of its proper divisors (3306310579).

102112211021 is an equidigital number, since it uses as much as digits as its factorization.

102112211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386539.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 102112211021 its reverse (120112211201), we get a palindrome (222224422222).

The spelling of 102112211021 in words is "one hundred two billion, one hundred twelve million, two hundred eleven thousand, twenty-one".