1521011225201 has 32 divisors (see below), whose sum is σ = 1766566126080. Its totient is φ = 1297461196800.

The previous prime is 1521011225191. The next prime is 1521011225207. The reversal of 1521011225201 is 1025221101251.

It is a cyclic number.

It is not a de Polignac number, because 1521011225201 - 2²² = 1521007030897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1521011225207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 117800936 + ... + 117813846.

It is an arithmetic number, because the mean of its divisors is an integer number (55205191440).

Almost surely, 2^{1521011225201} is an apocalyptic number.

It is an amenable number.

1521011225201 is a deficient number, since it is larger than the sum of its proper divisors (245554900879).

1521011225201 is a wasteful number, since it uses less digits than its factorization.

1521011225201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24617.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 1521011225201 its reverse (1025221101251), we get a palindrome (2546232326452).

The spelling of 1521011225201 in words is "one trillion, five hundred twenty-one billion, eleven million, two hundred twenty-five thousand, two hundred one".