1220100211223 has 16 divisors (see below), whose sum is σ = 1249669935360. Its totient is φ = 1190857291776.

The previous prime is 1220100211181. The next prime is 1220100211241. The reversal of 1220100211223 is 3221120010221.

It is a cyclic number.

It is not a de Polignac number, because 1220100211223 - 2¹² = 1220100207127 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 (1220100211123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4523990 + ... + 4786092.

It is an arithmetic number, because the mean of its divisors is an integer number (78104370960).

Almost surely, 2^{1220100211223} is an apocalyptic number.

1220100211223 is a deficient number, since it is larger than the sum of its proper divisors (29569724137).

1220100211223 is a wasteful number, since it uses less digits than its factorization.

1220100211223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262726.

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

Adding to 1220100211223 its reverse (3221120010221), we get a palindrome (4441220221444).

The spelling of 1220100211223 in words is "one trillion, two hundred twenty billion, one hundred million, two hundred eleven thousand, two hundred twenty-three".