140140222121 has 4 divisors (see below), whose sum is σ = 140141068032. Its totient is φ = 140139376212.

The previous prime is 140140222087. The next prime is 140140222153. The reversal of 140140222121 is 121222041041.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 121222041041 = 22739 ⋅5331019.

It is a cyclic number.

It is not a de Polignac number, because 140140222121 - 2³⁰ = 139066480297 is a prime.

It is a super-2 number, since 2×140140222121² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140140222093 and 140140222102.

It is not an unprimeable number, because it can be changed into a prime (140140222921) 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, 83801 + ... + 536006.

It is an arithmetic number, because the mean of its divisors is an integer number (35035267008).

Almost surely, 2^140140222121 is an apocalyptic number.

It is an amenable number.

140140222121 is a deficient number, since it is larger than the sum of its proper divisors (845911).

140140222121 is an equidigital number, since it uses as much as digits as its factorization.

140140222121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845910.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 140140222121 its reverse (121222041041), we get a palindrome (261362263162).

The spelling of 140140222121 in words is "one hundred forty billion, one hundred forty million, two hundred twenty-two thousand, one hundred twenty-one".