140523541221 has 16 divisors (see below), whose sum is σ = 214241040000. Its totient is φ = 80257942848.

The previous prime is 140523541211. The next prime is 140523541247. The reversal of 140523541221 is 122145325041.

It is not a de Polignac number, because 140523541221 - 2⁹ = 140523540709 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140523541201) 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, 1675746 + ... + 1757603.

It is an arithmetic number, because the mean of its divisors is an integer number (13390065000).

Almost surely, 2^140523541221 is an apocalyptic number.

It is an amenable number.

140523541221 is a deficient number, since it is larger than the sum of its proper divisors (73717498779).

140523541221 is a wasteful number, since it uses less digits than its factorization.

140523541221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3435308.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 140523541221 its reverse (122145325041), we get a palindrome (262668866262).

The spelling of 140523541221 in words is "one hundred forty billion, five hundred twenty-three million, five hundred forty-one thousand, two hundred twenty-one".