1121211210201 has 16 divisors (see below), whose sum is σ = 1596223850496. Its totient is φ = 698347930896.

The previous prime is 1121211210181. The next prime is 1121211210221. The reversal of 1121211210201 is 1020121121211.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1121211210181) and next prime (1121211210221).

It is not a de Polignac number, because 1121211210201 - 2¹⁹ = 1121210685913 is a prime.

It is a super-2 number, since 2×1121211210201² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1121211210221) 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 15 ways as a sum of consecutive naturals, for example, 188943985 + ... + 188949918.

It is an arithmetic number, because the mean of its divisors is an integer number (99763990656).

Almost surely, 2^{1121211210201} is an apocalyptic number.

It is an amenable number.

1121211210201 is a deficient number, since it is larger than the sum of its proper divisors (475012640295).

1121211210201 is a wasteful number, since it uses less digits than its factorization.

1121211210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377893972.

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

Adding to 1121211210201 its reverse (1020121121211), we get a palindrome (2141332331412).

The spelling of 1121211210201 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, two hundred ten thousand, two hundred one".