221010102002121 has 8 divisors (see below), whose sum is σ = 294682311803520. Its totient is φ = 147338980101072.

The previous prime is 221010102002119. The next prime is 221010102002149. The reversal of 221010102002121 is 121200201010122.

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

It is not a de Polignac number, because 221010102002121 - 2¹ = 221010102002119 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 221010102002121.

It is not an unprimeable number, because it can be changed into a prime (221010102002321) 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, 271500945 + ... + 272313758.

It is an arithmetic number, because the mean of its divisors is an integer number (36835288975440).

Almost surely, 2^{221010102002121} is an apocalyptic number.

It is an amenable number.

221010102002121 is a deficient number, since it is larger than the sum of its proper divisors (73672209801399).

221010102002121 is a wasteful number, since it uses less digits than its factorization.

221010102002121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543950175.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221010102002121 its reverse (121200201010122), we get a palindrome (342210303012243).

The spelling of 221010102002121 in words is "two hundred twenty-one trillion, ten billion, one hundred two million, two thousand, one hundred twenty-one".