1101400521 has 16 divisors (see below), whose sum is σ = 1590649536. Its totient is φ = 673862976.

The previous prime is 1101400501. The next prime is 1101400529. The reversal of 1101400521 is 1250041011.

It is a happy number.

It is not a de Polignac number, because 1101400521 - 2²⁷ = 967182793 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1101400521.

It is not an unprimeable number, because it can be changed into a prime (1101400529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 74875 + ... + 88368.

It is an arithmetic number, because the mean of its divisors is an integer number (99415596).

Almost surely, 2^1101400521 is an apocalyptic number.

It is an amenable number.

1101400521 is a deficient number, since it is larger than the sum of its proper divisors (489249015).

1101400521 is a wasteful number, since it uses less digits than its factorization.

1101400521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163432.

The product of its (nonzero) digits is 40, while the sum is 15.

The square root of 1101400521 is about 33187.3548358407. The cubic root of 1101400521 is about 1032.7180296518.

Adding to 1101400521 its reverse (1250041011), we get a palindrome (2351441532).

The spelling of 1101400521 in words is "one billion, one hundred one million, four hundred thousand, five hundred twenty-one".