121102010010 has 128 divisors (see below), whose sum is σ = 329442946560. Its totient is φ = 31649937408.

The previous prime is 121102009997. The next prime is 121102010021. The reversal of 121102010010 is 10010201121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 121102009974 and 121102010001.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 2675124 + ... + 2720016.

It is an arithmetic number, because the mean of its divisors is an integer number (2573773020).

Almost surely, 2^121102010010 is an apocalyptic number.

121102010010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 121102010010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164721473280).

121102010010 is an abundant number, since it is smaller than the sum of its proper divisors (208340936550).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121102010010 is a wasteful number, since it uses less digits than its factorization.

121102010010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45109 (or 45103 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 121102010010 its reverse (10010201121), we get a palindrome (131112211131).

The spelling of 121102010010 in words is "one hundred twenty-one billion, one hundred two million, ten thousand, ten".