1122212111101 has 16 divisors (see below), whose sum is σ = 1155008982960. Its totient is φ = 1089851443200.

The previous prime is 1122212111021. The next prime is 1122212111123. The reversal of 1122212111101 is 1011112122211.

It can be written as a sum of positive squares in 8 ways, for example, as 327840985476 + 794371125625 = 572574^2 + 891275^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1122212111101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122212111131) 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, 22077151 + ... + 22127923.

It is an arithmetic number, because the mean of its divisors is an integer number (72188061435).

Almost surely, 2^{1122212111101} is an apocalyptic number.

It is an amenable number.

1122212111101 is a deficient number, since it is larger than the sum of its proper divisors (32796871859).

1122212111101 is a wasteful number, since it uses less digits than its factorization.

1122212111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55056.

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

Adding to 1122212111101 its reverse (1011112122211), we get a palindrome (2133324233312).

The spelling of 1122212111101 in words is "one trillion, one hundred twenty-two billion, two hundred twelve million, one hundred eleven thousand, one hundred one".