102020121110121 has 12 divisors (see below), whose sum is σ = 144499087340592. Its totient is φ = 64012625009728.

The previous prime is 102020121110051. The next prime is 102020121110123. The reversal of 102020121110121 is 121011121020201.

It is a happy number.

It is not a de Polignac number, because 102020121110121 - 2³¹ = 102017973626473 is a prime.

It is a super-2 number, since 2×102020121110121² (a number of 29 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 102020121110121.

It is not an unprimeable number, because it can be changed into a prime (102020121110123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58835132415 + ... + 58835134148.

It is an arithmetic number, because the mean of its divisors is an integer number (12041590611716).

Almost surely, 2^{102020121110121} is an apocalyptic number.

It is an amenable number.

102020121110121 is a deficient number, since it is larger than the sum of its proper divisors (42478966230471).

102020121110121 is a wasteful number, since it uses less digits than its factorization.

102020121110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117670266600 (or 117670266583 counting only the distinct ones).

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

Adding to 102020121110121 its reverse (121011121020201), we get a palindrome (223031242130322).

The spelling of 102020121110121 in words is "one hundred two trillion, twenty billion, one hundred twenty-one million, one hundred ten thousand, one hundred twenty-one".