140311421221 has 8 divisors (see below), whose sum is σ = 148617086040. Its totient is φ = 132011539968.

The previous prime is 140311421203. The next prime is 140311421269. The reversal of 140311421221 is 122124113041.

It can be written as a sum of positive squares in 4 ways, for example, as 20920440321 + 119390980900 = 144639^2 + 345530^2 .

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

It is not a de Polignac number, because 140311421221 - 2¹³ = 140311413029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140311421192 and 140311421201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140311421321) 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, 1395886 + ... + 1493023.

It is an arithmetic number, because the mean of its divisors is an integer number (18577135755).

Almost surely, 2^140311421221 is an apocalyptic number.

It is an amenable number.

140311421221 is a deficient number, since it is larger than the sum of its proper divisors (8305664819).

140311421221 is a wasteful number, since it uses less digits than its factorization.

140311421221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2891783.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 140311421221 its reverse (122124113041), we get a palindrome (262435534262).

The spelling of 140311421221 in words is "one hundred forty billion, three hundred eleven million, four hundred twenty-one thousand, two hundred twenty-one".