102112011221221 has 8 divisors (see below), whose sum is σ = 102139722425664. Its totient is φ = 102084300685920.

The previous prime is 102112011220979. The next prime is 102112011221243. The reversal of 102112011221221 is 122122110211201.

It is a happy number.

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 102112011221221 - 2²⁹ = 102111474350309 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 (102112011221251) 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 7 ways as a sum of consecutive naturals, for example, 522222345 + ... + 522417841.

It is an arithmetic number, because the mean of its divisors is an integer number (12767465303208).

Almost surely, 2^{102112011221221} is an apocalyptic number.

It is an amenable number.

102112011221221 is a deficient number, since it is larger than the sum of its proper divisors (27711204443).

102112011221221 is a wasteful number, since it uses less digits than its factorization.

102112011221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334571.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 102112011221221 its reverse (122122110211201), we get a palindrome (224234121432422).

The spelling of 102112011221221 in words is "one hundred two trillion, one hundred twelve billion, eleven million, two hundred twenty-one thousand, two hundred twenty-one".