211202412101 has 4 divisors (see below), whose sum is σ = 211203469932. Its totient is φ = 211201354272.

The previous prime is 211202412019. The next prime is 211202412103. The reversal of 211202412101 is 101214202112.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 162626692900 + 48575719201 = 403270^2 + 220399^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-211202412101 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 211202412101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211202412103) 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, 128270 + ... + 662463.

It is an arithmetic number, because the mean of its divisors is an integer number (52800867483).

Almost surely, 2^211202412101 is an apocalyptic number.

It is an amenable number.

211202412101 is a deficient number, since it is larger than the sum of its proper divisors (1057831).

211202412101 is an equidigital number, since it uses as much as digits as its factorization.

211202412101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1057830.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211202412101 its reverse (101214202112), we get a palindrome (312416614213).

The spelling of 211202412101 in words is "two hundred eleven billion, two hundred two million, four hundred twelve thousand, one hundred one".