2011211001101 has 4 divisors (see below), whose sum is σ = 2011223643612. Its totient is φ = 2011198358592.

The previous prime is 2011211001091. The next prime is 2011211001157. The reversal of 2011211001101 is 1011001121102.

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 1498912938601 + 512298062500 = 1224301^2 + 715750^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011211001101 - 2²² = 2011206806797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011211001601) 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, 6079550 + ... + 6401823.

It is an arithmetic number, because the mean of its divisors is an integer number (502805910903).

Almost surely, 2^{2011211001101} is an apocalyptic number.

It is an amenable number.

2011211001101 is a deficient number, since it is larger than the sum of its proper divisors (12642511).

2011211001101 is a wasteful number, since it uses less digits than its factorization.

2011211001101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12642510.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 2011211001101 its reverse (1011001121102), we get a palindrome (3022212122203).

The spelling of 2011211001101 in words is "two trillion, eleven billion, two hundred eleven million, one thousand, one hundred one".