1221054454001 has 8 divisors (see below), whose sum is σ = 1274182926720. Its totient is φ = 1167929243712.

The previous prime is 1221054453989. The next prime is 1221054454003. The reversal of 1221054454001 is 1004544501221.

It is a happy number.

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 1221054454001 - 2¹⁰ = 1221054452977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1221054454003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34856 + ... + 1563113.

It is an arithmetic number, because the mean of its divisors is an integer number (159272865840).

Almost surely, 2^{1221054454001} is an apocalyptic number.

It is an amenable number.

1221054454001 is a deficient number, since it is larger than the sum of its proper divisors (53128472719).

1221054454001 is a wasteful number, since it uses less digits than its factorization.

1221054454001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631215.

The product of its (nonzero) digits is 6400, while the sum is 29.

Adding to 1221054454001 its reverse (1004544501221), we get a palindrome (2225598955222).

The spelling of 1221054454001 in words is "one trillion, two hundred twenty-one billion, fifty-four million, four hundred fifty-four thousand, one".