140335205021 has 16 divisors (see below), whose sum is σ = 156536774208. Its totient is φ = 124724745600.

The previous prime is 140335205009. The next prime is 140335205041. The reversal of 140335205021 is 120502533041.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 140335205021 - 2¹⁸ = 140334942877 is a prime.

It is a super-2 number, since 2×140335205021² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140335205041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264491 + ... + 592136.

It is an arithmetic number, because the mean of its divisors is an integer number (9783548388).

Almost surely, 2^140335205021 is an apocalyptic number.

140335205021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

140335205021 is a deficient number, since it is larger than the sum of its proper divisors (16201569187).

140335205021 is a wasteful number, since it uses less digits than its factorization.

140335205021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856972.

The product of its (nonzero) digits is 3600, while the sum is 26.

Adding to 140335205021 its reverse (120502533041), we get a palindrome (260837738062).

The spelling of 140335205021 in words is "one hundred forty billion, three hundred thirty-five million, two hundred five thousand, twenty-one".