2221001210101 has 8 divisors (see below), whose sum is σ = 2225477122904. Its totient is φ = 2216527891200.

The previous prime is 2221001210093. The next prime is 2221001210107. The reversal of 2221001210101 is 1010121001222.

It can be written as a sum of positive squares in 4 ways, for example, as 911748071025 + 1309253139076 = 954855^2 + 1144226^2 .

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 2221001210101 - 2³ = 2221001210093 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 (2221001210107) 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, 1070311 + ... + 2363803.

It is an arithmetic number, because the mean of its divisors is an integer number (278184640363).

Almost surely, 2^{2221001210101} is an apocalyptic number.

It is an amenable number.

2221001210101 is a deficient number, since it is larger than the sum of its proper divisors (4475912803).

2221001210101 is a wasteful number, since it uses less digits than its factorization.

2221001210101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1296951.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 2221001210101 its reverse (1010121001222), we get a palindrome (3231122211323).

The spelling of 2221001210101 in words is "two trillion, two hundred twenty-one billion, one million, two hundred ten thousand, one hundred one".