1121211020121 has 16 divisors (see below), whose sum is σ = 1508893056000. Its totient is φ = 740507774720.

The previous prime is 1121211020087. The next prime is 1121211020179. The reversal of 1121211020121 is 1210201121211.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1121211020121 - 2⁶ = 1121211020057 is a prime.

It is a super-2 number, since 2×1121211020121² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121211020121.

It is not an unprimeable number, because it can be changed into a prime (1121211020921) 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, 67746 + ... + 1499003.

It is an arithmetic number, because the mean of its divisors is an integer number (94305816000).

Almost surely, 2^{1121211020121} is an apocalyptic number.

It is an amenable number.

1121211020121 is a deficient number, since it is larger than the sum of its proper divisors (387682035879).

1121211020121 is a wasteful number, since it uses less digits than its factorization.

1121211020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1568976.

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

Adding to 1121211020121 its reverse (1210201121211), we get a palindrome (2331412141332).

The spelling of 1121211020121 in words is "one trillion, one hundred twenty-one billion, two hundred eleven million, twenty thousand, one hundred twenty-one".