2211211020001 has 2 divisors, whose sum is σ = 2211211020002. Its totient is φ = 2211211020000.

The previous prime is 2211211019989. The next prime is 2211211020043. The reversal of 2211211020001 is 1000201121122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2144233062400 + 66977957601 = 1464320^2 + 258801^2 .

It is a cyclic number.

It is not a de Polignac number, because 2211211020001 - 2²⁵ = 2211177465569 is a prime.

It is not a weakly prime, because it can be changed into another prime (2211211020401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1105605510000 + 1105605510001.

It is an arithmetic number, because the mean of its divisors is an integer number (1105605510001).

Almost surely, 2^{2211211020001} is an apocalyptic number.

It is an amenable number.

2211211020001 is a deficient number, since it is larger than the sum of its proper divisors (1).

2211211020001 is an equidigital number, since it uses as much as digits as its factorization.

2211211020001 is an evil number, because the sum of its binary digits is even.

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

Adding to 2211211020001 its reverse (1000201121122), we get a palindrome (3211412141123).

The spelling of 2211211020001 in words is "two trillion, two hundred eleven billion, two hundred eleven million, twenty thousand, one".