221002002132101 has 4 divisors (see below), whose sum is σ = 228131098975104. Its totient is φ = 213872905289100.

The previous prime is 221002002132091. The next prime is 221002002132151. The reversal of 221002002132101 is 101231200200122.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221002002132101 is a prime.

It is a Duffinian number.

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 221002002132101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221002002132151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3564548421455 + ... + 3564548421516.

It is an arithmetic number, because the mean of its divisors is an integer number (57032774743776).

Almost surely, 2^{221002002132101} is an apocalyptic number.

It is an amenable number.

221002002132101 is a deficient number, since it is larger than the sum of its proper divisors (7129096843003).

221002002132101 is an equidigital number, since it uses as much as digits as its factorization.

221002002132101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7129096843002.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 221002002132101 its reverse (101231200200122), we get a palindrome (322233202332223).

The spelling of 221002002132101 in words is "two hundred twenty-one trillion, two billion, two million, one hundred thirty-two thousand, one hundred one".