1210121213312 has 64 divisors (see below), whose sum is σ = 2630135655360. Its totient is φ = 550016463360.

The previous prime is 1210121213291. The next prime is 1210121213341. The reversal of 1210121213312 is 2133121210121.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32369543 + ... + 32406905.

It is an arithmetic number, because the mean of its divisors is an integer number (41095869615).

Almost surely, 2^{1210121213312} is an apocalyptic number.

It is an amenable number.

1210121213312 is an abundant number, since it is smaller than the sum of its proper divisors (1420014442048).

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

1210121213312 is a wasteful number, since it uses less digits than its factorization.

1210121213312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60391 (or 60379 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 1210121213312 its reverse (2133121210121), we get a palindrome (3343242423433).

The spelling of 1210121213312 in words is "one trillion, two hundred ten billion, one hundred twenty-one million, two hundred thirteen thousand, three hundred twelve".