1220111020210 has 16 divisors (see below), whose sum is σ = 2196212520600. Its totient is φ = 488041589376.

The previous prime is 1220111020187. The next prime is 1220111020213. The reversal of 1220111020210 is 120201110221.

It can be written as a sum of positive squares in 4 ways, for example, as 691906212481 + 528204807729 = 831809^2 + 726777^2 .

It is not an unprimeable number, because it can be changed into a prime (1220111020213) 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, 2862436 + ... + 3260944.

Almost surely, 2^{1220111020210} is an apocalyptic number.

1220111020210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220111020210 is a deficient number, since it is larger than the sum of its proper divisors (976101500390).

1220111020210 is a wasteful number, since it uses less digits than its factorization.

1220111020210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704685.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1220111020210 its reverse (120201110221), we get a palindrome (1340312130431).

The spelling of 1220111020210 in words is "one trillion, two hundred twenty billion, one hundred eleven million, twenty thousand, two hundred ten".