11312212122111 has 16 divisors (see below), whose sum is σ = 15738819091200. Its totient is φ = 7213543666560.

The previous prime is 11312212122073. The next prime is 11312212122137. The reversal of 11312212122111 is 11122121221311.

It is not a de Polignac number, because 11312212122111 - 2¹³ = 11312212113919 is a prime.

It is a super-2 number, since 2×11312212122111² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11312212122181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15998740 + ... + 16690838.

It is an arithmetic number, because the mean of its divisors is an integer number (983676193200).

Almost surely, 2^{11312212122111} is an apocalyptic number.

11312212122111 is a deficient number, since it is larger than the sum of its proper divisors (4426606969089).

11312212122111 is a wasteful number, since it uses less digits than its factorization.

11312212122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929006.

The product of its digits is 96, while the sum is 21.

Adding to 11312212122111 its reverse (11122121221311), we get a palindrome (22434333343422).

The spelling of 11312212122111 in words is "eleven trillion, three hundred twelve billion, two hundred twelve million, one hundred twenty-two thousand, one hundred eleven".