121221002100110 has 128 divisors (see below), whose sum is σ = 243143129161728. Its totient is φ = 43138577664000.

The previous prime is 121221002100101. The next prime is 121221002100131. The reversal of 121221002100110 is 11001200122121.

It is a super-3 number, since 3×121221002100110³ (a number of 43 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4691020790 + ... + 4691046630.

It is an arithmetic number, because the mean of its divisors is an integer number (1899555696576).

Almost surely, 2^{121221002100110} is an apocalyptic number.

121221002100110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121221002100110 is an abundant number, since it is smaller than the sum of its proper divisors (121922127061618).

121221002100110 is a wasteful number, since it uses less digits than its factorization.

121221002100110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27930.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121221002100110 its reverse (11001200122121), we get a palindrome (132222202222231).

The spelling of 121221002100110 in words is "one hundred twenty-one trillion, two hundred twenty-one billion, two million, one hundred thousand, one hundred ten".