102111011011221 has 8 divisors (see below), whose sum is σ = 136206024070944. Its totient is φ = 68045002646160.

The previous prime is 102111011011213. The next prime is 102111011011253. The reversal of 102111011011221 is 122110110111201.

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

It is not a de Polignac number, because 102111011011221 - 2³ = 102111011011213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 102111011011221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102111011011421) 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, 7251165450 + ... + 7251179531.

It is an arithmetic number, because the mean of its divisors is an integer number (17025753008868).

Almost surely, 2^{102111011011221} is an apocalyptic number.

It is an amenable number.

102111011011221 is a deficient number, since it is larger than the sum of its proper divisors (34095013059723).

102111011011221 is a wasteful number, since it uses less digits than its factorization.

102111011011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14502347331.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 102111011011221 its reverse (122110110111201), we get a palindrome (224221121122422).

The spelling of 102111011011221 in words is "one hundred two trillion, one hundred eleven billion, eleven million, eleven thousand, two hundred twenty-one".