1220221023211 has 8 divisors (see below), whose sum is σ = 1250869712400. Its totient is φ = 1189614581760.

The previous prime is 1220221023179. The next prime is 1220221023251. The reversal of 1220221023211 is 1123201220221.

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 1220221023211 - 2⁵ = 1220221023179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220221023251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10503441 + ... + 10618978.

It is an arithmetic number, because the mean of its divisors is an integer number (156358714050).

Almost surely, 2^{1220221023211} is an apocalyptic number.

1220221023211 is a deficient number, since it is larger than the sum of its proper divisors (30648689189).

1220221023211 is a wasteful number, since it uses less digits than its factorization.

1220221023211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21123869.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1220221023211 its reverse (1123201220221), we get a palindrome (2343422243432).

The spelling of 1220221023211 in words is "one trillion, two hundred twenty billion, two hundred twenty-one million, twenty-three thousand, two hundred eleven".