11212111012011 has 32 divisors (see below), whose sum is σ = 19481677060608. Its totient is φ = 5566193441280.

The previous prime is 11212111011991. The next prime is 11212111012031. The reversal of 11212111012011 is 11021011121211.

It is an interprime number because it is at equal distance from previous prime (11212111011991) and next prime (11212111012031).

It is not a de Polignac number, because 11212111012011 - 2²⁵ = 11212077457579 is a prime.

It is a super-2 number, since 2×11212111012011² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (11212111012031) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1207936645 + ... + 1207945926.

It is an arithmetic number, because the mean of its divisors is an integer number (608802408144).

Almost surely, 2^{11212111012011} is an apocalyptic number.

11212111012011 is a deficient number, since it is larger than the sum of its proper divisors (8269566048597).

11212111012011 is a wasteful number, since it uses less digits than its factorization.

11212111012011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415882611.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 11212111012011 its reverse (11021011121211), we get a palindrome (22233122133222).

The spelling of 11212111012011 in words is "eleven trillion, two hundred twelve billion, one hundred eleven million, twelve thousand, eleven".