1220104431234 has 96 divisors (see below), whose sum is σ = 2887812031104. Its totient is φ = 370026074880.

The previous prime is 1220104431223. The next prime is 1220104431253. The reversal of 1220104431234 is 4321344010221.

1220104431234 is a `hidden beast` number, since 1 + 2 + 201 + 0 + 4 + 431 + 23 + 4 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1220104431198 and 1220104431207.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 77130894 + ... + 77146710.

It is an arithmetic number, because the mean of its divisors is an integer number (30081375324).

Almost surely, 2^{1220104431234} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220104431234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1443906015552).

1220104431234 is an abundant number, since it is smaller than the sum of its proper divisors (1667707599870).

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

1220104431234 is a wasteful number, since it uses less digits than its factorization.

1220104431234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20552 (or 20549 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 1220104431234 its reverse (4321344010221), we get a palindrome (5541448441455).

The spelling of 1220104431234 in words is "one trillion, two hundred twenty billion, one hundred four million, four hundred thirty-one thousand, two hundred thirty-four".