140101122121 has 4 divisors (see below), whose sum is σ = 140646262932. Its totient is φ = 139555981312.

The previous prime is 140101122113. The next prime is 140101122167. The reversal of 140101122121 is 121221101041.

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 139473118521 + 628003600 = 373461^2 + 25060^2 .

It is a cyclic number.

It is not a de Polignac number, because 140101122121 - 2³ = 140101122113 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 140101122095 and 140101122104.

It is not an unprimeable number, because it can be changed into a prime (140101122521) 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, 272570020 + ... + 272570533.

It is an arithmetic number, because the mean of its divisors is an integer number (35161565733).

Almost surely, 2^140101122121 is an apocalyptic number.

It is an amenable number.

140101122121 is a deficient number, since it is larger than the sum of its proper divisors (545140811).

140101122121 is an equidigital number, since it uses as much as digits as its factorization.

140101122121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 545140810.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 140101122121 its reverse (121221101041), we get a palindrome (261322223162).

The spelling of 140101122121 in words is "one hundred forty billion, one hundred one million, one hundred twenty-two thousand, one hundred twenty-one".