1211409948312 has 48 divisors (see below), whose sum is σ = 3280968628080. Its totient is φ = 403795108800.

The previous prime is 1211409948263. The next prime is 1211409948407. The reversal of 1211409948312 is 2138499041121.

1211409948312 is a `hidden beast` number, since 1 + 21 + 140 + 9 + 9 + 483 + 1 + 2 = 666.

It is a super-3 number, since 3×1211409948312³ (a number of 37 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4148637 + ... + 4431027.

It is an arithmetic number, because the mean of its divisors is an integer number (68353513085).

Almost surely, 2^{1211409948312} is an apocalyptic number.

1211409948312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1211409948312 is an abundant number, since it is smaller than the sum of its proper divisors (2069558679768).

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

1211409948312 is a wasteful number, since it uses less digits than its factorization.

1211409948312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341984 (or 341977 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 1211409948312 in words is "one trillion, two hundred eleven billion, four hundred nine million, nine hundred forty-eight thousand, three hundred twelve".