2122211220001 has 8 divisors (see below), whose sum is σ = 2138422877960. Its totient is φ = 2106053332992.

The previous prime is 2122211219993. The next prime is 2122211220071. The reversal of 2122211220001 is 1000221122212.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 193556882401 + 1928654337600 = 439951^2 + 1388760^2 .

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 2122211220001 - 2³ = 2122211219993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2122211220071) 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, 13363500 + ... + 13521373.

It is an arithmetic number, because the mean of its divisors is an integer number (267302859745).

Almost surely, 2^{2122211220001} is an apocalyptic number.

It is an amenable number.

2122211220001 is a deficient number, since it is larger than the sum of its proper divisors (16211657959).

2122211220001 is a wasteful number, since it uses less digits than its factorization.

2122211220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26885475.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 2122211220001 its reverse (1000221122212), we get a palindrome (3122432342213).

The spelling of 2122211220001 in words is "two trillion, one hundred twenty-two billion, two hundred eleven million, two hundred twenty thousand, one".