11222021121111 has 64 divisors (see below), whose sum is σ = 17008859105280. Its totient is φ = 7402152276000.

The previous prime is 11222021121097. The next prime is 11222021121119. The reversal of 11222021121111 is 11112112022211.

It is a happy number.

11222021121111 is a `hidden beast` number, since 1 + 12 + 220 + 211 + 211 + 11 = 666.

It is not a de Polignac number, because 11222021121111 - 2⁵ = 11222021121079 is a prime.

It is a super-2 number, since 2×11222021121111² (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 (11222021121119) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 333743446 + ... + 333777068.

It is an arithmetic number, because the mean of its divisors is an integer number (265763423520).

Almost surely, 2^{11222021121111} is an apocalyptic number.

11222021121111 is a deficient number, since it is larger than the sum of its proper divisors (5786837984169).

11222021121111 is an equidigital number, since it uses as much as digits as its factorization.

11222021121111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35256 (or 35238 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 11222021121111 its reverse (11112112022211), we get a palindrome (22334133143322).

The spelling of 11222021121111 in words is "eleven trillion, two hundred twenty-two billion, twenty-one million, one hundred twenty-one thousand, one hundred eleven".