140233221231421 has 8 divisors (see below), whose sum is σ = 148510202363640. Its totient is φ = 131959347667968.

The previous prime is 140233221231401. The next prime is 140233221231427. The reversal of 140233221231421 is 124132122332041.

It can be written as a sum of positive squares in 4 ways, for example, as 30031222005625 + 110201999225796 = 5480075^2 + 10497714^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 140233221231421 - 2⁷ = 140233221231293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140233221231427) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 776799276 + ... + 776979781.

It is an arithmetic number, because the mean of its divisors is an integer number (18563775295455).

Almost surely, 2^{140233221231421} is an apocalyptic number.

It is an amenable number.

140233221231421 is a deficient number, since it is larger than the sum of its proper divisors (8276981132219).

140233221231421 is a wasteful number, since it uses less digits than its factorization.

140233221231421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1553784383.

The product of its (nonzero) digits is 13824, while the sum is 31.

Adding to 140233221231421 its reverse (124132122332041), we get a palindrome (264365343563462).

The spelling of 140233221231421 in words is "one hundred forty trillion, two hundred thirty-three billion, two hundred twenty-one million, two hundred thirty-one thousand, four hundred twenty-one".