11211101021011 has 4 divisors (see below), whose sum is σ = 11211152219712. Its totient is φ = 11211049822312.

The previous prime is 11211101020993. The next prime is 11211101021027. The reversal of 11211101021011 is 11012010111211.

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 11211101021011 - 2¹⁷ = 11211100889939 is a prime.

It is a super-2 number, since 2×11211101021011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 11211101020982 and 11211101021000.

It is not an unprimeable number, because it can be changed into a prime (11211101027011) 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, 25269475 + ... + 25709308.

It is an arithmetic number, because the mean of its divisors is an integer number (2802788054928).

Almost surely, 2^{11211101021011} is an apocalyptic number.

11211101021011 is a deficient number, since it is larger than the sum of its proper divisors (51198701).

11211101021011 is an equidigital number, since it uses as much as digits as its factorization.

11211101021011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51198700.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 11211101021011 its reverse (11012010111211), we get a palindrome (22223111132222).

The spelling of 11211101021011 in words is "eleven trillion, two hundred eleven billion, one hundred one million, twenty-one thousand, eleven".