140211021 has 16 divisors (see below), whose sum is σ = 191903040. Its totient is φ = 91006080.

The previous prime is 140210989. The next prime is 140211031. The reversal of 140211021 is 120112041.

It is a happy number.

It is not a de Polignac number, because 140211021 - 2⁵ = 140210989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 140210988 and 140211006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140211031) 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, 83175 + ... + 84843.

It is an arithmetic number, because the mean of its divisors is an integer number (11993940).

Almost surely, 2^140211021 is an apocalyptic number.

It is an amenable number.

140211021 is a deficient number, since it is larger than the sum of its proper divisors (51692019).

140211021 is a wasteful number, since it uses less digits than its factorization.

140211021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2396.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 140211021 is about 11841.0734732962. The cubic root of 140211021 is about 519.5101661928.

Adding to 140211021 its reverse (120112041), we get a palindrome (260323062).

The spelling of 140211021 in words is "one hundred forty million, two hundred eleven thousand, twenty-one".