140021122121 has 12 divisors (see below), whose sum is σ = 144720487296. Its totient is φ = 135469800360.

The previous prime is 140021122061. The next prime is 140021122127. The reversal of 140021122121 is 121221120041.

It is not a de Polignac number, because 140021122121 - 2¹⁸ = 140020859977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 140021122121.

It is not an unprimeable number, because it can be changed into a prime (140021122127) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4272620 + ... + 4305266.

It is an arithmetic number, because the mean of its divisors is an integer number (12060040608).

Almost surely, 2^140021122121 is an apocalyptic number.

It is an amenable number.

140021122121 is a deficient number, since it is larger than the sum of its proper divisors (4699365175).

140021122121 is an equidigital number, since it uses as much as digits as its factorization.

140021122121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37172 (or 37141 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 140021122121 its reverse (121221120041), we get a palindrome (261242242162).

The spelling of 140021122121 in words is "one hundred forty billion, twenty-one million, one hundred twenty-two thousand, one hundred twenty-one".