1213421754234 has 16 divisors (see below), whose sum is σ = 2437726217472. Its totient is φ = 402660133248.

The previous prime is 1213421754151. The next prime is 1213421754247. The reversal of 1213421754234 is 4324571243121.

It is a junction number, because it is equal to n+sod(n) for n = 1213421754192 and 1213421754201.

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, 453444759 + ... + 453447434.

It is an arithmetic number, because the mean of its divisors is an integer number (152357888592).

Almost surely, 2^{1213421754234} is an apocalyptic number.

1213421754234 is an abundant number, since it is smaller than the sum of its proper divisors (1224304463238).

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

1213421754234 is a wasteful number, since it uses less digits than its factorization.

1213421754234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906892421.

The product of its digits is 161280, while the sum is 39.

Adding to 1213421754234 its reverse (4324571243121), we get a palindrome (5537992997355).

The spelling of 1213421754234 in words is "one trillion, two hundred thirteen billion, four hundred twenty-one million, seven hundred fifty-four thousand, two hundred thirty-four".