140221228138 has 8 divisors (see below), whose sum is σ = 213779905380. Its totient is φ = 68961259680.

The previous prime is 140221228123. The next prime is 140221228139. The reversal of 140221228138 is 831822122041.

It can be written as a sum of positive squares in 2 ways, for example, as 140057823049 + 163405089 = 374243^2 + 12783^2 .

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

It is not an unprimeable number, because it can be changed into a prime (140221228139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574677043 + ... + 574677286.

Almost surely, 2^140221228138 is an apocalyptic number.

140221228138 is a deficient number, since it is larger than the sum of its proper divisors (73558677242).

140221228138 is a wasteful number, since it uses less digits than its factorization.

140221228138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149354392.

The product of its (nonzero) digits is 12288, while the sum is 34.

The spelling of 140221228138 in words is "one hundred forty billion, two hundred twenty-one million, two hundred twenty-eight thousand, one hundred thirty-eight".