211420200399 has 4 divisors (see below), whose sum is σ = 281893600536. Its totient is φ = 140946800264.

The previous prime is 211420200337. The next prime is 211420200401. The reversal of 211420200399 is 993002024112.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 211420200399 - 2¹⁵ = 211420167631 is a prime.

It is a super-2 number, since 2×211420200399² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211420200499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35236700064 + ... + 35236700069.

It is an arithmetic number, because the mean of its divisors is an integer number (70473400134).

Almost surely, 2^211420200399 is an apocalyptic number.

211420200399 is a deficient number, since it is larger than the sum of its proper divisors (70473400137).

211420200399 is an equidigital number, since it uses as much as digits as its factorization.

211420200399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70473400136.

The product of its (nonzero) digits is 7776, while the sum is 33.

The spelling of 211420200399 in words is "two hundred eleven billion, four hundred twenty million, two hundred thousand, three hundred ninety-nine".