1212231044421 has 48 divisors (see below), whose sum is σ = 1811497184640. Its totient is φ = 780712732800.

The previous prime is 1212231044411. The next prime is 1212231044473. The reversal of 1212231044421 is 1244401322121.

1212231044421 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 231 + 0 + 4 + 4 + 421 = 666.

It is not a de Polignac number, because 1212231044421 - 2⁶ = 1212231044357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212231044411) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 81519975 + ... + 81534843.

It is an arithmetic number, because the mean of its divisors is an integer number (37739524680).

Almost surely, 2^{1212231044421} is an apocalyptic number.

It is an amenable number.

1212231044421 is a deficient number, since it is larger than the sum of its proper divisors (599266140219).

1212231044421 is a wasteful number, since it uses less digits than its factorization.

1212231044421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17546 (or 17543 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

Adding to 1212231044421 its reverse (1244401322121), we get a palindrome (2456632366542).

The spelling of 1212231044421 in words is "one trillion, two hundred twelve billion, two hundred thirty-one million, forty-four thousand, four hundred twenty-one".