101001120122121 has 16 divisors (see below), whose sum is σ = 135285312706560. Its totient is φ = 67026209129360.

The previous prime is 101001120122117. The next prime is 101001120122129. The reversal of 101001120122121 is 121221021100101.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 101001120122121 - 2² = 101001120122117 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 101001120122121.

It is not an unprimeable number, because it can be changed into a prime (101001120122129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87591741 + ... + 88737338.

It is an arithmetic number, because the mean of its divisors is an integer number (8455332044160).

Almost surely, 2^{101001120122121} is an apocalyptic number.

It is an amenable number.

101001120122121 is a deficient number, since it is larger than the sum of its proper divisors (34284192584439).

101001120122121 is a wasteful number, since it uses less digits than its factorization.

101001120122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176329956.

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

Adding to 101001120122121 its reverse (121221021100101), we get a palindrome (222222141222222).

The spelling of 101001120122121 in words is "one hundred one trillion, one billion, one hundred twenty million, one hundred twenty-two thousand, one hundred twenty-one".