102121120110221 has 8 divisors (see below), whose sum is σ = 103351692581760. Its totient is φ = 100890552341952.

The previous prime is 102121120110203. The next prime is 102121120110223. The reversal of 102121120110221 is 122011021121201.

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 102121120110221 - 2³⁰ = 102120046368397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 102121120110221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102121120110223) 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, 64439276 + ... + 66005018.

It is an arithmetic number, because the mean of its divisors is an integer number (12918961572720).

Almost surely, 2^{102121120110221} is an apocalyptic number.

It is an amenable number.

102121120110221 is a deficient number, since it is larger than the sum of its proper divisors (1230572471539).

102121120110221 is an equidigital number, since it uses as much as digits as its factorization.

102121120110221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2351635.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 102121120110221 its reverse (122011021121201), we get a palindrome (224132141231422).

The spelling of 102121120110221 in words is "one hundred two trillion, one hundred twenty-one billion, one hundred twenty million, one hundred ten thousand, two hundred twenty-one".