102011102211221 has 8 divisors (see below), whose sum is σ = 120344894774784. Its totient is φ = 84617504138160.

The previous prime is 102011102211217. The next prime is 102011102211269. The reversal of 102011102211221 is 122112201110201.

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

It is not a de Polignac number, because 102011102211221 - 2² = 102011102211217 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 102011102211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102011102210221) 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, 235048622390 + ... + 235048622823.

It is an arithmetic number, because the mean of its divisors is an integer number (15043111846848).

Almost surely, 2^{102011102211221} is an apocalyptic number.

It is an amenable number.

102011102211221 is a deficient number, since it is larger than the sum of its proper divisors (18333792563563).

102011102211221 is an equidigital number, since it uses as much as digits as its factorization.

102011102211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470097245251.

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

Adding to 102011102211221 its reverse (122112201110201), we get a palindrome (224123303321422).

The spelling of 102011102211221 in words is "one hundred two trillion, eleven billion, one hundred two million, two hundred eleven thousand, two hundred twenty-one".