211002211340421 has 16 divisors (see below), whose sum is σ = 281451566323200. Its totient is φ = 140610508443648.

The previous prime is 211002211340387. The next prime is 211002211340497. The reversal of 211002211340421 is 124043112200112.

It is not a de Polignac number, because 211002211340421 - 2⁷ = 211002211340293 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211002211340391 and 211002211340400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211002211340821) 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, 85158700 + ... + 87601418.

It is an arithmetic number, because the mean of its divisors is an integer number (17590722895200).

Almost surely, 2^{211002211340421} is an apocalyptic number.

It is an amenable number.

211002211340421 is a deficient number, since it is larger than the sum of its proper divisors (70449354982779).

211002211340421 is a wasteful number, since it uses less digits than its factorization.

211002211340421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2454508.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 211002211340421 its reverse (124043112200112), we get a palindrome (335045323540533).

The spelling of 211002211340421 in words is "two hundred eleven trillion, two billion, two hundred eleven million, three hundred forty thousand, four hundred twenty-one".