1220154478430 has 16 divisors (see below), whose sum is σ = 2226364063344. Its totient is φ = 481376013120.

The previous prime is 1220154478427. The next prime is 1220154478441. The reversal of 1220154478430 is 348744510221.

It is a congruent number.

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, 835721516 + ... + 835722975.

It is an arithmetic number, because the mean of its divisors is an integer number (139147753959).

Almost surely, 2^{1220154478430} is an apocalyptic number.

1220154478430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220154478430 is a deficient number, since it is larger than the sum of its proper divisors (1006209584914).

1220154478430 is a wasteful number, since it uses less digits than its factorization.

1220154478430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1671444571.

The product of its (nonzero) digits is 215040, while the sum is 41.

Adding to 1220154478430 its reverse (348744510221), we get a palindrome (1568898988651).

The spelling of 1220154478430 in words is "one trillion, two hundred twenty billion, one hundred fifty-four million, four hundred seventy-eight thousand, four hundred thirty".