1221310200801 has 8 divisors (see below), whose sum is σ = 1628419920544. Its totient is φ = 814203640800.

The previous prime is 1221310200797. The next prime is 1221310200811. The reversal of 1221310200801 is 1080020131221.

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

It is not a de Polignac number, because 1221310200801 - 2² = 1221310200797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1221310200811) 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, 344826 + ... + 1600476.

It is an arithmetic number, because the mean of its divisors is an integer number (203552490068).

Almost surely, 2^{1221310200801} is an apocalyptic number.

It is an amenable number.

1221310200801 is a deficient number, since it is larger than the sum of its proper divisors (407109719743).

1221310200801 is a wasteful number, since it uses less digits than its factorization.

1221310200801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1579871.

The product of its (nonzero) digits is 192, while the sum is 21.

The spelling of 1221310200801 in words is "one trillion, two hundred twenty-one billion, three hundred ten million, two hundred thousand, eight hundred one".