1122112121101 has 4 divisors (see below), whose sum is σ = 1133222142204. Its totient is φ = 1111002100000.

The previous prime is 1122112121077. The next prime is 1122112121131. The reversal of 1122112121101 is 1011212112211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1069929571876 + 52182549225 = 1034374^2 + 228435^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122112121101 - 2⁹ = 1122112120589 is a prime.

It is a super-2 number, since 2×1122112121101² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122112121131) 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, 5555010400 + ... + 5555010601.

It is an arithmetic number, because the mean of its divisors is an integer number (283305535551).

Almost surely, 2^{1122112121101} is an apocalyptic number.

It is an amenable number.

1122112121101 is a deficient number, since it is larger than the sum of its proper divisors (11110021103).

1122112121101 is a wasteful number, since it uses less digits than its factorization.

1122112121101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110021102.

The product of its (nonzero) digits is 16, while the sum is 16.

Adding to 1122112121101 its reverse (1011212112211), we get a palindrome (2133324233312).

The spelling of 1122112121101 in words is "one trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, one hundred one".