1221013131103 has 8 divisors (see below), whose sum is σ = 1224312496128. Its totient is φ = 1217714346744.

The previous prime is 1221013131071. The next prime is 1221013131109. The reversal of 1221013131103 is 3011313101221.

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 1221013131103 - 2⁵ = 1221013131071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221013131109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4244950 + ... + 4523452.

It is an arithmetic number, because the mean of its divisors is an integer number (153039062016).

Almost surely, 2^{1221013131103} is an apocalyptic number.

1221013131103 is a deficient number, since it is larger than the sum of its proper divisors (3299365025).

1221013131103 is a wasteful number, since it uses less digits than its factorization.

1221013131103 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290333.

The product of its (nonzero) digits is 108, while the sum is 19.

Adding to 1221013131103 its reverse (3011313101221), we get a palindrome (4232326232324).

The spelling of 1221013131103 in words is "one trillion, two hundred twenty-one billion, thirteen million, one hundred thirty-one thousand, one hundred three".