2111211012011 has 4 divisors (see below), whose sum is σ = 2113042072152. Its totient is φ = 2109379951872.

The previous prime is 2111211011983. The next prime is 2111211012017. The reversal of 2111211012011 is 1102101121112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2111211012011 - 2¹⁸ = 2111210749867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2111211012017) 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, 915528341 + ... + 915530646.

It is an arithmetic number, because the mean of its divisors is an integer number (528260518038).

Almost surely, 2^{2111211012011} is an apocalyptic number.

2111211012011 is a deficient number, since it is larger than the sum of its proper divisors (1831060141).

2111211012011 is a wasteful number, since it uses less digits than its factorization.

2111211012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1831060140.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 2111211012011 its reverse (1102101121112), we get a palindrome (3213312133123).

The spelling of 2111211012011 in words is "two trillion, one hundred eleven billion, two hundred eleven million, twelve thousand, eleven".