1221200000103 has 8 divisors (see below), whose sum is σ = 1628272598400. Its totient is φ = 814130367608.

The previous prime is 1221200000101. The next prime is 1221200000107. The reversal of 1221200000103 is 3010000021221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1221200000103 - 2¹ = 1221200000101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221200000101) by changing a digit.

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, 531568 + ... + 1650746.

It is an arithmetic number, because the mean of its divisors is an integer number (203534074800).

Almost surely, 2^{1221200000103} is an apocalyptic number.

1221200000103 is a deficient number, since it is larger than the sum of its proper divisors (407072598297).

1221200000103 is a wasteful number, since it uses less digits than its factorization.

1221200000103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1482901.

The product of its (nonzero) digits is 24, while the sum is 12.

Adding to 1221200000103 its reverse (3010000021221), we get a palindrome (4231200021324).

The spelling of 1221200000103 in words is "one trillion, two hundred twenty-one billion, two hundred million, one hundred three", and thus it is an aban number.