1220212021103 has 8 divisors (see below), whose sum is σ = 1227595104288. Its totient is φ = 1212829848064.

The previous prime is 1220212021079. The next prime is 1220212021163. The reversal of 1220212021103 is 3011202120221.

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 1220212021103 - 2¹⁸ = 1220211758959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220212021163) 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, 2565275 + ... + 3003507.

It is an arithmetic number, because the mean of its divisors is an integer number (153449388036).

Almost surely, 2^{1220212021103} is an apocalyptic number.

1220212021103 is a deficient number, since it is larger than the sum of its proper divisors (7383083185).

1220212021103 is a wasteful number, since it uses less digits than its factorization.

1220212021103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455073.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1220212021103 its reverse (3011202120221), we get a palindrome (4231414141324).

The spelling of 1220212021103 in words is "one trillion, two hundred twenty billion, two hundred twelve million, twenty-one thousand, one hundred three".