102010210110121 has 32 divisors (see below), whose sum is σ = 115108961338368. Its totient is φ = 89878206443520.

The previous prime is 102010210110113. The next prime is 102010210110139. The reversal of 102010210110121 is 121011012010201.

It is a happy number.

It is not a de Polignac number, because 102010210110121 - 2³ = 102010210110113 is a prime.

It is a super-2 number, since 2×102010210110121² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102010210110161) 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 31 ways as a sum of consecutive naturals, for example, 644604421 + ... + 644762653.

It is an arithmetic number, because the mean of its divisors is an integer number (3597155041824).

Almost surely, 2^{102010210110121} is an apocalyptic number.

It is an amenable number.

102010210110121 is a deficient number, since it is larger than the sum of its proper divisors (13098751228247).

102010210110121 is a wasteful number, since it uses less digits than its factorization.

102010210110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193401.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 102010210110121 its reverse (121011012010201), we get a palindrome (223021222120322).

The spelling of 102010210110121 in words is "one hundred two trillion, ten billion, two hundred ten million, one hundred ten thousand, one hundred twenty-one".