11428561201 has 2 divisors, whose sum is σ = 11428561202. Its totient is φ = 11428561200.

The previous prime is 11428561141. The next prime is 11428561211. The reversal of 11428561201 is 10216582411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8758152225 + 2670408976 = 93585^2 + 51676^2 .

It is a cyclic number.

It is not a de Polignac number, because 11428561201 - 2²⁵ = 11395006769 is a prime.

It is a super-2 number, since 2×11428561201² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11428561211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5714280600 + 5714280601.

It is an arithmetic number, because the mean of its divisors is an integer number (5714280601).

Almost surely, 2^11428561201 is an apocalyptic number.

It is an amenable number.

11428561201 is a deficient number, since it is larger than the sum of its proper divisors (1).

11428561201 is an equidigital number, since it uses as much as digits as its factorization.

11428561201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 31.

The spelling of 11428561201 in words is "eleven billion, four hundred twenty-eight million, five hundred sixty-one thousand, two hundred one".