1551110411201 has 4 divisors (see below), whose sum is σ = 1670426596692. Its totient is φ = 1431794225712.

The previous prime is 1551110411189. The next prime is 1551110411219. The reversal of 1551110411201 is 1021140111551.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1005397263025 + 545713148176 = 1002695^2 + 738724^2 .

It is a cyclic number.

It is not a de Polignac number, because 1551110411201 - 2¹⁴ = 1551110394817 is a prime.

It is a super-2 number, since 2×1551110411201² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1551110411261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59658092726 + ... + 59658092751.

It is an arithmetic number, because the mean of its divisors is an integer number (417606649173).

Almost surely, 2^{1551110411201} is an apocalyptic number.

It is an amenable number.

1551110411201 is a deficient number, since it is larger than the sum of its proper divisors (119316185491).

1551110411201 is a wasteful number, since it uses less digits than its factorization.

1551110411201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119316185490.

The product of its (nonzero) digits is 200, while the sum is 23.

Adding to 1551110411201 its reverse (1021140111551), we get a palindrome (2572250522752).

The spelling of 1551110411201 in words is "one trillion, five hundred fifty-one billion, one hundred ten million, four hundred eleven thousand, two hundred one".