1220111221210 has 16 divisors (see below), whose sum is σ = 2509943083776. Its totient is φ = 418323847248.

The previous prime is 1220111221201. The next prime is 1220111221211. The reversal of 1220111221210 is 121221110221.

It is not an unprimeable number, because it can be changed into a prime (1220111221211) 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, 8715080082 + ... + 8715080221.

It is an arithmetic number, because the mean of its divisors is an integer number (156871442736).

Almost surely, 2^{1220111221210} is an apocalyptic number.

1220111221210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220111221210 is an abundant number, since it is smaller than the sum of its proper divisors (1289831862566).

1220111221210 is a wasteful number, since it uses less digits than its factorization.

1220111221210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17430160317.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1220111221210 its reverse (121221110221), we get a palindrome (1341332331431).

The spelling of 1220111221210 in words is "one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty-one thousand, two hundred ten".