1220104534 has 16 divisors (see below), whose sum is σ = 1997182656. Its totient is φ = 554413000.

The previous prime is 1220104531. The next prime is 1220104547. The reversal of 1220104534 is 4354010221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220104531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79809 + ... + 93859.

It is an arithmetic number, because the mean of its divisors is an integer number (124823916).

Almost surely, 2^1220104534 is an apocalyptic number.

1220104534 is a deficient number, since it is larger than the sum of its proper divisors (777078122).

1220104534 is a wasteful number, since it uses less digits than its factorization.

1220104534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18011.

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 1220104534 is about 34929.9947609501. The cubic root of 1220104534 is about 1068.5602477709.

Adding to 1220104534 its reverse (4354010221), we get a palindrome (5574114755).

The spelling of 1220104534 in words is "one billion, two hundred twenty million, one hundred four thousand, five hundred thirty-four".