210120342411 has 16 divisors (see below), whose sum is σ = 320281369088. Its totient is φ = 120032020800.

The previous prime is 210120342389. The next prime is 210120342433. The reversal of 210120342411 is 114243021012.

It is an interprime number because it is at equal distance from previous prime (210120342389) and next prime (210120342433).

It is not a de Polignac number, because 210120342411 - 2⁵ = 210120342379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210120344411) 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, 1460770 + ... + 1598151.

It is an arithmetic number, because the mean of its divisors is an integer number (20017585568).

Almost surely, 2^210120342411 is an apocalyptic number.

210120342411 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

210120342411 is a deficient number, since it is larger than the sum of its proper divisors (110161026677).

210120342411 is a wasteful number, since it uses less digits than its factorization.

210120342411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3062202.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 210120342411 its reverse (114243021012), we get a palindrome (324363363423).

The spelling of 210120342411 in words is "two hundred ten billion, one hundred twenty million, three hundred forty-two thousand, four hundred eleven".