102110021211221 has 8 divisors (see below), whose sum is σ = 102200586546240. Its totient is φ = 102019484069568.

The previous prime is 102110021211217. The next prime is 102110021211251. The reversal of 102110021211221 is 122112120011201.

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 102110021211221 - 2² = 102110021211217 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 102110021211221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102110021211251) 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, 201725 + ... + 14291981.

It is an arithmetic number, because the mean of its divisors is an integer number (12775073318280).

Almost surely, 2^{102110021211221} is an apocalyptic number.

It is an amenable number.

102110021211221 is a deficient number, since it is larger than the sum of its proper divisors (90565335019).

102110021211221 is a wasteful number, since it uses less digits than its factorization.

102110021211221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14096683.

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

Adding to 102110021211221 its reverse (122112120011201), we get a palindrome (224222141222422).

The spelling of 102110021211221 in words is "one hundred two trillion, one hundred ten billion, twenty-one million, two hundred eleven thousand, two hundred twenty-one".