1220211210001 has 16 divisors (see below), whose sum is σ = 1419347888640. Its totient is φ = 1027414140480.

The previous prime is 1220211209963. The next prime is 1220211210041. The reversal of 1220211210001 is 1000121120221.

It is not a de Polignac number, because 1220211210001 - 2²¹ = 1220209112849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220211210041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5491390 + ... + 5709271.

It is an arithmetic number, because the mean of its divisors is an integer number (88709243040).

Almost surely, 2^{1220211210001} is an apocalyptic number.

It is an amenable number.

1220211210001 is a deficient number, since it is larger than the sum of its proper divisors (199136678639).

1220211210001 is a wasteful number, since it uses less digits than its factorization.

1220211210001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11200944.

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

Adding to 1220211210001 its reverse (1000121120221), we get a palindrome (2220332330222).

The spelling of 1220211210001 in words is "one trillion, two hundred twenty billion, two hundred eleven million, two hundred ten thousand, one".