121110121010 has 16 divisors (see below), whose sum is σ = 218133397656. Its totient is φ = 48414008448.

The previous prime is 121110120997. The next prime is 121110121057. The reversal of 121110121010 is 10121011121.

It can be written as a sum of positive squares in 4 ways, for example, as 100013430001 + 21096691009 = 316249^2 + 145247^2 .

It is a super-2 number, since 2×121110121010² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121110120982 and 121110121000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3738059 + ... + 3770318.

Almost surely, 2^121110121010 is an apocalyptic number.

121110121010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121110121010 is a deficient number, since it is larger than the sum of its proper divisors (97023276646).

121110121010 is a wasteful number, since it uses less digits than its factorization.

121110121010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7509997.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121110121010 its reverse (10121011121), we get a palindrome (131231132131).

The spelling of 121110121010 in words is "one hundred twenty-one billion, one hundred ten million, one hundred twenty-one thousand, ten".