221011012200101 has 4 divisors (see below), whose sum is σ = 221016299460204. Its totient is φ = 221005724940000.

The previous prime is 221011012200059. The next prime is 221011012200103. The reversal of 221011012200101 is 101002210110122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 37688917156900 + 183322095043201 = 6139130^2 + 13539649^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221011012200101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221011012200103) 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, 2643567350 + ... + 2643650951.

It is an arithmetic number, because the mean of its divisors is an integer number (55254074865051).

Almost surely, 2^{221011012200101} is an apocalyptic number.

It is an amenable number.

221011012200101 is a deficient number, since it is larger than the sum of its proper divisors (5287260103).

221011012200101 is an equidigital number, since it uses as much as digits as its factorization.

221011012200101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5287260102.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 221011012200101 its reverse (101002210110122), we get a palindrome (322013222310223).

The spelling of 221011012200101 in words is "two hundred twenty-one trillion, eleven billion, twelve million, two hundred thousand, one hundred one".