1554201220011 has 8 divisors (see below), whose sum is σ = 2260656320064. Its totient is φ = 941940133320.

The previous prime is 1554201220007. The next prime is 1554201220049. The reversal of 1554201220011 is 1100221024551.

It is a happy number.

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

It is not a de Polignac number, because 1554201220011 - 2² = 1554201220007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1554201220711) 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, 23548503301 + ... + 23548503366.

It is an arithmetic number, because the mean of its divisors is an integer number (282582040008).

Almost surely, 2^{1554201220011} is an apocalyptic number.

1554201220011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1554201220011 is a deficient number, since it is larger than the sum of its proper divisors (706455100053).

1554201220011 is a wasteful number, since it uses less digits than its factorization.

1554201220011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47097006681.

The product of its (nonzero) digits is 800, while the sum is 24.

Adding to 1554201220011 its reverse (1100221024551), we get a palindrome (2654422244562).

The spelling of 1554201220011 in words is "one trillion, five hundred fifty-four billion, two hundred one million, two hundred twenty thousand, eleven".