2221200000001 has 4 divisors (see below), whose sum is σ = 2221323137604. Its totient is φ = 2221076862400.

The previous prime is 2221199999987. The next prime is 2221200000077. The reversal of 2221200000001 is 1000000021222.

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 66760224400 + 2154439775601 = 258380^2 + 1467801^2 .

It is a cyclic number.

It is not a de Polignac number, because 2221200000001 - 2⁵ = 2221199999969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2221200000301) 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, 61541740 + ... + 61577821.

It is an arithmetic number, because the mean of its divisors is an integer number (555330784401).

Almost surely, 2^{2221200000001} is an apocalyptic number.

It is an amenable number.

2221200000001 is a deficient number, since it is larger than the sum of its proper divisors (123137603).

2221200000001 is a wasteful number, since it uses less digits than its factorization.

2221200000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123137602.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 2221200000001 its reverse (1000000021222), we get a palindrome (3221200021223).

The spelling of 2221200000001 in words is "two trillion, two hundred twenty-one billion, two hundred million, one", and thus it is an aban number.