1221515041303 has 8 divisors (see below), whose sum is σ = 1293576616080. Its totient is φ = 1149476549760.

The previous prime is 1221515041301. The next prime is 1221515041319. The reversal of 1221515041303 is 3031405151221.

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 1221515041303 - 2¹ = 1221515041301 is a prime.

It is a super-2 number, since 2×1221515041303² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221515041301) 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, 5661793 + ... + 5873578.

It is an arithmetic number, because the mean of its divisors is an integer number (161697077010).

Almost surely, 2^{1221515041303} is an apocalyptic number.

1221515041303 is a deficient number, since it is larger than the sum of its proper divisors (72061574777).

1221515041303 is a wasteful number, since it uses less digits than its factorization.

1221515041303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11541617.

The product of its (nonzero) digits is 3600, while the sum is 28.

The spelling of 1221515041303 in words is "one trillion, two hundred twenty-one billion, five hundred fifteen million, forty-one thousand, three hundred three".