1221200310315 has 8 divisors (see below), whose sum is σ = 1953920496528. Its totient is φ = 651306832160.

The previous prime is 1221200310293. The next prime is 1221200310329. The reversal of 1221200310315 is 5130130021221.

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

It is not a de Polignac number, because 1221200310315 - 2¹² = 1221200306219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1221200310291 and 1221200310300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40706676996 + ... + 40706677025.

It is an arithmetic number, because the mean of its divisors is an integer number (244240062066).

Almost surely, 2^{1221200310315} is an apocalyptic number.

1221200310315 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1221200310315 is a deficient number, since it is larger than the sum of its proper divisors (732720186213).

1221200310315 is an equidigital number, since it uses as much as digits as its factorization.

1221200310315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81413354029.

The product of its (nonzero) digits is 360, while the sum is 21.

Adding to 1221200310315 its reverse (5130130021221), we get a palindrome (6351330331536).

The spelling of 1221200310315 in words is "one trillion, two hundred twenty-one billion, two hundred million, three hundred ten thousand, three hundred fifteen".