140215051121 has 4 divisors (see below), whose sum is σ = 140216764644. Its totient is φ = 140213337600.

The previous prime is 140215051091. The next prime is 140215051129. The reversal of 140215051121 is 121150512041.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54679274896 + 85535776225 = 233836^2 + 292465^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140215051121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (140215051129) 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, 727520 + ... + 899841.

It is an arithmetic number, because the mean of its divisors is an integer number (35054191161).

Almost surely, 2^140215051121 is an apocalyptic number.

It is an amenable number.

140215051121 is a deficient number, since it is larger than the sum of its proper divisors (1713523).

140215051121 is an equidigital number, since it uses as much as digits as its factorization.

140215051121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1713522.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 140215051121 its reverse (121150512041), we get a palindrome (261365563162).

The spelling of 140215051121 in words is "one hundred forty billion, two hundred fifteen million, fifty-one thousand, one hundred twenty-one".