1011325543221 has 16 divisors (see below), whose sum is σ = 1541394073728. Its totient is φ = 577777843200.

The previous prime is 1011325543213. The next prime is 1011325543247. The reversal of 1011325543221 is 1223455231101.

It is a happy number.

It is not a de Polignac number, because 1011325543221 - 2³ = 1011325543213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011325543201) 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, 5001300 + ... + 5199581.

It is an arithmetic number, because the mean of its divisors is an integer number (96337129608).

Almost surely, 2^{1011325543221} is an apocalyptic number.

It is an amenable number.

1011325543221 is a deficient number, since it is larger than the sum of its proper divisors (530068530507).

1011325543221 is a wasteful number, since it uses less digits than its factorization.

1011325543221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10205612.

The product of its (nonzero) digits is 7200, while the sum is 30.

The spelling of 1011325543221 in words is "one trillion, eleven billion, three hundred twenty-five million, five hundred forty-three thousand, two hundred twenty-one".