101021020121121 has 16 divisors (see below), whose sum is σ = 137112874441920. Its totient is φ = 66140509941440.

The previous prime is 101021020121069. The next prime is 101021020121167. The reversal of 101021020121121 is 121121020120101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101021020121121 - 2¹¹ = 101021020119073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101021020121121.

It is not an unprimeable number, because it can be changed into a prime (101021020121171) 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, 281528610 + ... + 281887211.

It is an arithmetic number, because the mean of its divisors is an integer number (8569554652620).

Almost surely, 2^{101021020121121} is an apocalyptic number.

It is an amenable number.

101021020121121 is a deficient number, since it is larger than the sum of its proper divisors (36091854320799).

101021020121121 is a wasteful number, since it uses less digits than its factorization.

101021020121121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 563416896.

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

Adding to 101021020121121 its reverse (121121020120101), we get a palindrome (222142040241222).

The spelling of 101021020121121 in words is "one hundred one trillion, twenty-one billion, twenty million, one hundred twenty-one thousand, one hundred twenty-one".