1121220120101 has 16 divisors (see below), whose sum is σ = 1165374604800. Its totient is φ = 1077567504960.

The previous prime is 1121220120089. The next prime is 1121220120113. The reversal of 1121220120101 is 1010210221211.

It is an interprime number because it is at equal distance from previous prime (1121220120089) and next prime (1121220120113).

It is a cyclic number.

It is not a de Polignac number, because 1121220120101 - 2¹⁰ = 1121220119077 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121220120131) 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, 28493426 + ... + 28532748.

It is an arithmetic number, because the mean of its divisors is an integer number (72835912800).

Almost surely, 2^{1121220120101} is an apocalyptic number.

It is an amenable number.

1121220120101 is a deficient number, since it is larger than the sum of its proper divisors (44154484699).

1121220120101 is a wasteful number, since it uses less digits than its factorization.

1121220120101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45676.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1121220120101 its reverse (1010210221211), we get a palindrome (2131430341312).

The spelling of 1121220120101 in words is "one trillion, one hundred twenty-one billion, two hundred twenty million, one hundred twenty thousand, one hundred one".