1121212110201 has 4 divisors (see below), whose sum is σ = 1494949480272. Its totient is φ = 747474740132.

The previous prime is 1121212110127. The next prime is 1121212110233. The reversal of 1121212110201 is 1020112121211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1121212110201 - 2²³ = 1121203721593 is a prime.

It is a super-2 number, since 2×1121212110201² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121212110901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 186868685031 + ... + 186868685036.

It is an arithmetic number, because the mean of its divisors is an integer number (373737370068).

Almost surely, 2^{1121212110201} is an apocalyptic number.

It is an amenable number.

1121212110201 is a deficient number, since it is larger than the sum of its proper divisors (373737370071).

1121212110201 is an equidigital number, since it uses as much as digits as its factorization.

1121212110201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373737370070.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1121212110201 its reverse (1020112121211), we get a palindrome (2141324231412).

The spelling of 1121212110201 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred ten thousand, two hundred one".