121012221212200 has 48 divisors (see below), whose sum is σ = 282024902376000. Its totient is φ = 48289363657920.

The previous prime is 121012221212167. The next prime is 121012221212209. The reversal of 121012221212200 is 2212122210121.

It is not an unprimeable number, because it can be changed into a prime (121012221212209) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 721946160 + ... + 722113759.

It is an arithmetic number, because the mean of its divisors is an integer number (5875518799500).

Almost surely, 2^{121012221212200} is an apocalyptic number.

121012221212200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012221212200 is an abundant number, since it is smaller than the sum of its proper divisors (161012681163800).

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

121012221212200 is a wasteful number, since it uses less digits than its factorization.

121012221212200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1444060354 (or 1444060345 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 121012221212200 its reverse (2212122210121), we get a palindrome (123224343422321).

The spelling of 121012221212200 in words is "one hundred twenty-one trillion, twelve billion, two hundred twenty-one million, two hundred twelve thousand, two hundred".