121200000002010 has 96 divisors (see below), whose sum is σ = 326107267529472. Its totient is φ = 31206436859520.

The previous prime is 121200000001981. The next prime is 121200000002077. The reversal of 121200000002010 is 10200000002121.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121200000001983 and 121200000002001.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 138481314 + ... + 139353773.

It is an arithmetic number, because the mean of its divisors is an integer number (3396950703432).

Almost surely, 2^{121200000002010} is an apocalyptic number.

121200000002010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121200000002010 is an abundant number, since it is smaller than the sum of its proper divisors (204907267527462).

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

121200000002010 is a wasteful number, since it uses less digits than its factorization.

121200000002010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277835268 (or 277835265 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 121200000002010 its reverse (10200000002121), we get a palindrome (131400000004131).

The spelling of 121200000002010 in words is "one hundred twenty-one trillion, two hundred billion, two thousand, ten".