1220024455 has 16 divisors (see below), whose sum is σ = 1580612544. Its totient is φ = 898675200.

The previous prime is 1220024419. The next prime is 1220024467. The reversal of 1220024455 is 5544200221.

It is not a de Polignac number, because 1220024455 - 2⁷ = 1220024327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2662 + ... + 49468.

It is an arithmetic number, because the mean of its divisors is an integer number (98788284).

Almost surely, 2^1220024455 is an apocalyptic number.

1220024455 is a deficient number, since it is larger than the sum of its proper divisors (360588089).

1220024455 is a wasteful number, since it uses less digits than its factorization.

1220024455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47226.

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 1220024455 is about 34928.8484636983. The cubic root of 1220024455 is about 1068.5368696898.

Adding to 1220024455 its reverse (5544200221), we get a palindrome (6764224676).

The spelling of 1220024455 in words is "one billion, two hundred twenty million, twenty-four thousand, four hundred fifty-five".