1222111211010 has 64 divisors (see below), whose sum is σ = 3012537128832. Its totient is φ = 317067457536.

The previous prime is 1222111211003. The next prime is 1222111211011. The reversal of 1222111211010 is 101121112221.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1222111211011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24076077 + ... + 24126783.

It is an arithmetic number, because the mean of its divisors is an integer number (47070892638).

Almost surely, 2^{1222111211010} is an apocalyptic number.

1222111211010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1222111211010 is an abundant number, since it is smaller than the sum of its proper divisors (1790425917822).

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

1222111211010 is a wasteful number, since it uses less digits than its factorization.

1222111211010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72467.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1222111211010 its reverse (101121112221), we get a palindrome (1323232323231).

The spelling of 1222111211010 in words is "one trillion, two hundred twenty-two billion, one hundred eleven million, two hundred eleven thousand, ten".