1220228506841 has 4 divisors (see below), whose sum is σ = 1240910346000. Its totient is φ = 1199546667684.

The previous prime is 1220228506831. The next prime is 1220228506877. The reversal of 1220228506841 is 1486058220221.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220228506841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220228506801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10340919491 + ... + 10340919608.

It is an arithmetic number, because the mean of its divisors is an integer number (310227586500).

Almost surely, 2^{1220228506841} is an apocalyptic number.

It is an amenable number.

1220228506841 is a deficient number, since it is larger than the sum of its proper divisors (20681839159).

1220228506841 is an equidigital number, since it uses as much as digits as its factorization.

1220228506841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20681839158.

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 1220228506841 in words is "one trillion, two hundred twenty billion, two hundred twenty-eight million, five hundred six thousand, eight hundred forty-one".