1122121112201 has 4 divisors (see below), whose sum is σ = 1122139232004. Its totient is φ = 1122102992400.

The previous prime is 1122121112183. The next prime is 1122121112251. The reversal of 1122121112201 is 1022111212211.

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 1063169272201 + 58951840000 = 1031101^2 + 242800^2 .

It is a cyclic number.

It is not a de Polignac number, because 1122121112201 - 2¹⁸ = 1122120850057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1122121112201.

It is not an unprimeable number, because it can be changed into a prime (1122121112251) 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, 8966690 + ... + 9090971.

It is an arithmetic number, because the mean of its divisors is an integer number (280534808001).

Almost surely, 2^{1122121112201} is an apocalyptic number.

It is an amenable number.

1122121112201 is a deficient number, since it is larger than the sum of its proper divisors (18119803).

1122121112201 is an equidigital number, since it uses as much as digits as its factorization.

1122121112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18119802.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1122121112201 its reverse (1022111212211), we get a palindrome (2144232324412).

The spelling of 1122121112201 in words is "one trillion, one hundred twenty-two billion, one hundred twenty-one million, one hundred twelve thousand, two hundred one".