1201222221010 has 16 divisors (see below), whose sum is σ = 2471085711936. Its totient is φ = 411847618608.

The previous prime is 1201222221007. The next prime is 1201222221019. The reversal of 1201222221010 is 101222221021.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1201222221019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8580158652 + ... + 8580158791.

It is an arithmetic number, because the mean of its divisors is an integer number (154442856996).

Almost surely, 2^{1201222221010} is an apocalyptic number.

1201222221010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201222221010 is an abundant number, since it is smaller than the sum of its proper divisors (1269863490926).

1201222221010 is a wasteful number, since it uses less digits than its factorization.

1201222221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17160317457.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1201222221010 its reverse (101222221021), we get a palindrome (1302444442031).

The spelling of 1201222221010 in words is "one trillion, two hundred one billion, two hundred twenty-two million, two hundred twenty-one thousand, ten".