1222220100210 has 32 divisors (see below), whose sum is σ = 2934894487680. Its totient is φ = 325751332608.

The previous prime is 1222220100209. The next prime is 1222220100229. The reversal of 1222220100210 is 120010222221.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1222220100210.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10819590 + ... + 10931969.

It is an arithmetic number, because the mean of its divisors is an integer number (91715452740).

Almost surely, 2^{1222220100210} is an apocalyptic number.

1222220100210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222220100210 is an abundant number, since it is smaller than the sum of its proper divisors (1712674387470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222220100210 is a wasteful number, since it uses less digits than its factorization.

1222220100210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21753442.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222220100210 its reverse (120010222221), we get a palindrome (1342230322431).

The spelling of 1222220100210 in words is "one trillion, two hundred twenty-two billion, two hundred twenty million, one hundred thousand, two hundred ten".