1121222121201 has 48 divisors (see below), whose sum is σ = 2047156360704. Its totient is φ = 575429692032.

The previous prime is 1121222121167. The next prime is 1121222121203. The reversal of 1121222121201 is 1021212221211.

1121222121201 is a `hidden beast` number, since 1 + 121 + 222 + 121 + 201 = 666.

It is not a de Polignac number, because 1121222121201 - 2⁷ = 1121222121073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1121222121203) 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 47 ways as a sum of consecutive naturals, for example, 18469881 + ... + 18530486.

It is an arithmetic number, because the mean of its divisors is an integer number (42649090848).

Almost surely, 2^{1121222121201} is an apocalyptic number.

It is an amenable number.

1121222121201 is a deficient number, since it is larger than the sum of its proper divisors (925934239503).

1121222121201 is a wasteful number, since it uses less digits than its factorization.

1121222121201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37000430 (or 37000427 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1121222121201 its reverse (1021212221211), we get a palindrome (2142434342412).

The spelling of 1121222121201 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-two million, one hundred twenty-one thousand, two hundred one".