2211011211001 has 4 divisors (see below), whose sum is σ = 2225653669504. Its totient is φ = 2196368752500.

The previous prime is 2211011210971. The next prime is 2211011211049. The reversal of 2211011211001 is 1001121101122.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2211011211001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2211011211061) 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, 7321229025 + ... + 7321229326.

It is an arithmetic number, because the mean of its divisors is an integer number (556413417376).

Almost surely, 2^{2211011211001} is an apocalyptic number.

It is an amenable number.

2211011211001 is a deficient number, since it is larger than the sum of its proper divisors (14642458503).

2211011211001 is a wasteful number, since it uses less digits than its factorization.

2211011211001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14642458502.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 2211011211001 its reverse (1001121101122), we get a palindrome (3212132312123).

The spelling of 2211011211001 in words is "two trillion, two hundred eleven billion, eleven million, two hundred eleven thousand, one".