121012212111200 has 36 divisors (see below), whose sum is σ = 295421062818420. Its totient is φ = 48404884844160.

The previous prime is 121012212111199. The next prime is 121012212111269. The reversal of 121012212111200 is 2111212210121.

It is a super-2 number, since 2×121012212111200² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 75632631770 + ... + 75632633369.

It is an arithmetic number, because the mean of its divisors is an integer number (8206140633845).

Almost surely, 2^{121012212111200} is an apocalyptic number.

121012212111200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012212111200 is an abundant number, since it is smaller than the sum of its proper divisors (174408850707220).

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

121012212111200 is a wasteful number, since it uses less digits than its factorization.

121012212111200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151265265159 (or 151265265146 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121012212111200 its reverse (2111212210121), we get a palindrome (123123424321321).

It can be divided in two parts, 121012 and 212111200, that added together give a palindrome (212232212).

The spelling of 121012212111200 in words is "one hundred twenty-one trillion, twelve billion, two hundred twelve million, one hundred eleven thousand, two hundred".