102011020121 has 16 divisors (see below), whose sum is σ = 108189095040. Its totient is φ = 95916539520.

The previous prime is 102011020091. The next prime is 102011020129. The reversal of 102011020121 is 121020110201.

It is a cyclic number.

It is not a de Polignac number, because 102011020121 - 2⁶ = 102011020057 is a prime.

It is a super-2 number, since 2×102011020121² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (102011020129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339751 + ... + 1413843.

It is an arithmetic number, because the mean of its divisors is an integer number (6761818440).

Almost surely, 2^102011020121 is an apocalyptic number.

It is an amenable number.

102011020121 is a deficient number, since it is larger than the sum of its proper divisors (6178074919).

102011020121 is a wasteful number, since it uses less digits than its factorization.

102011020121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74656.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 102011020121 its reverse (121020110201), we get a palindrome (223031130322).

The spelling of 102011020121 in words is "one hundred two billion, eleven million, twenty thousand, one hundred twenty-one".