1220252355501 has 8 divisors (see below), whose sum is σ = 1635992109024. Its totient is φ = 809007086160.

The previous prime is 1220252355481. The next prime is 1220252355521. The reversal of 1220252355501 is 1055532520221.

It is an interprime number because it is at equal distance from previous prime (1220252355481) and next prime (1220252355521).

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

It is not a de Polignac number, because 1220252355501 - 2⁶ = 1220252355437 is a prime.

It is a super-2 number, since 2×1220252355501² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220252355521) 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, 1123620411 + ... + 1123621496.

It is an arithmetic number, because the mean of its divisors is an integer number (204499013628).

Almost surely, 2^{1220252355501} is an apocalyptic number.

It is an amenable number.

1220252355501 is a deficient number, since it is larger than the sum of its proper divisors (415739753523).

1220252355501 is a wasteful number, since it uses less digits than its factorization.

1220252355501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2247242091.

The product of its (nonzero) digits is 30000, while the sum is 33.

Adding to 1220252355501 its reverse (1055532520221), we get a palindrome (2275784875722).

The spelling of 1220252355501 in words is "one trillion, two hundred twenty billion, two hundred fifty-two million, three hundred fifty-five thousand, five hundred one".