1221303011210 has 16 divisors (see below), whose sum is σ = 2198544187392. Its totient is φ = 488477034000.

The previous prime is 1221303011143. The next prime is 1221303011339. The reversal of 1221303011210 is 121103031221.

It is a super-2 number, since 2×1221303011210² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5405066 + ... + 5626485.

It is an arithmetic number, because the mean of its divisors is an integer number (137409011712).

Almost surely, 2^{1221303011210} is an apocalyptic number.

1221303011210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221303011210 is a deficient number, since it is larger than the sum of its proper divisors (977241176182).

1221303011210 is a wasteful number, since it uses less digits than its factorization.

1221303011210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11042629.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1221303011210 its reverse (121103031221), we get a palindrome (1342406042431).

The spelling of 1221303011210 in words is "one trillion, two hundred twenty-one billion, three hundred three million, eleven thousand, two hundred ten".