11245310220521 has 64 divisors (see below), whose sum is σ = 13798226534400. Its totient is φ = 9057238477056.

The previous prime is 11245310220511. The next prime is 11245310220527. The reversal of 11245310220521 is 12502201354211.

It is a cyclic number.

It is not a de Polignac number, because 11245310220521 - 2⁶ = 11245310220457 is a prime.

It is a super-2 number, since 2×11245310220521² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (11245310220527) 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 63 ways as a sum of consecutive naturals, for example, 60369890 + ... + 60555876.

It is an arithmetic number, because the mean of its divisors is an integer number (215597289600).

Almost surely, 2^{11245310220521} is an apocalyptic number.

It is an amenable number.

11245310220521 is a deficient number, since it is larger than the sum of its proper divisors (2552916313879).

11245310220521 is a wasteful number, since it uses less digits than its factorization.

11245310220521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186438.

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 11245310220521 its reverse (12502201354211), we get a palindrome (23747511574732).

The spelling of 11245310220521 in words is "eleven trillion, two hundred forty-five billion, three hundred ten million, two hundred twenty thousand, five hundred twenty-one".