1220204102454 has 24 divisors (see below), whose sum is σ = 2681011833552. Its totient is φ = 401006042640.

The previous prime is 1220204102449. The next prime is 1220204102459. The reversal of 1220204102454 is 4542014020221.

It is a happy number.

1220204102454 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 2 + 0 + 410 + 245 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (1220204102449) and next prime (1220204102459).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220204102459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 477386869 + ... + 477389424.

It is an arithmetic number, because the mean of its divisors is an integer number (111708826398).

Almost surely, 2^{1220204102454} is an apocalyptic number.

1220204102454 is an abundant number, since it is smaller than the sum of its proper divisors (1460807731098).

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

1220204102454 is a wasteful number, since it uses less digits than its factorization.

1220204102454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954776372 (or 954776369 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 27.

Adding to 1220204102454 its reverse (4542014020221), we get a palindrome (5762218122675).

The spelling of 1220204102454 in words is "one trillion, two hundred twenty billion, two hundred four million, one hundred two thousand, four hundred fifty-four".