1220021150255 has 8 divisors (see below), whose sum is σ = 1550144520432. Its totient is φ = 918604160128.

The previous prime is 1220021150213. The next prime is 1220021150303. The reversal of 1220021150255 is 5520511200221.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220021150255 - 2³⁰ = 1218947408431 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 7 ways as a sum of consecutive naturals, for example, 7176594917 + ... + 7176595086.

It is an arithmetic number, because the mean of its divisors is an integer number (193768065054).

Almost surely, 2^{1220021150255} is an apocalyptic number.

1220021150255 is a deficient number, since it is larger than the sum of its proper divisors (330123370177).

1220021150255 is a wasteful number, since it uses less digits than its factorization.

1220021150255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14353190025.

The product of its (nonzero) digits is 2000, while the sum is 26.

Adding to 1220021150255 its reverse (5520511200221), we get a palindrome (6740532350476).

The spelling of 1220021150255 in words is "one trillion, two hundred twenty billion, twenty-one million, one hundred fifty thousand, two hundred fifty-five".