111211022211121 has 16 divisors (see below), whose sum is σ = 131956628087808. Its totient is φ = 91715544244800.

The previous prime is 111211022211119. The next prime is 111211022211169. The reversal of 111211022211121 is 121112220112111.

It is not a de Polignac number, because 111211022211121 - 2¹ = 111211022211119 is a prime.

It is a super-2 number, since 2×111211022211121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111211022215121) 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, 1481156650 + ... + 1481231731.

It is an arithmetic number, because the mean of its divisors is an integer number (8247289255488).

Almost surely, 2^{111211022211121} is an apocalyptic number.

It is an amenable number.

111211022211121 is a deficient number, since it is larger than the sum of its proper divisors (20745605876687).

111211022211121 is a wasteful number, since it uses less digits than its factorization.

111211022211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2962388592.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 111211022211121 its reverse (121112220112111), we get a palindrome (232323242323232).

The spelling of 111211022211121 in words is "one hundred eleven trillion, two hundred eleven billion, twenty-two million, two hundred eleven thousand, one hundred twenty-one".