1201221220010 has 16 divisors (see below), whose sum is σ = 2471083652736. Its totient is φ = 411847275408.

The previous prime is 1201221219839. The next prime is 1201221220027. The reversal of 1201221220010 is 100221221021.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

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, 8580151502 + ... + 8580151641.

It is an arithmetic number, because the mean of its divisors is an integer number (154442728296).

Almost surely, 2^{1201221220010} is an apocalyptic number.

1201221220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1201221220010 is an abundant number, since it is smaller than the sum of its proper divisors (1269862432726).

1201221220010 is a wasteful number, since it uses less digits than its factorization.

1201221220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17160303157.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1201221220010 its reverse (100221221021), we get a palindrome (1301442441031).

The spelling of 1201221220010 in words is "one trillion, two hundred one billion, two hundred twenty-one million, two hundred twenty thousand, ten".