211421122202 has 8 divisors (see below), whose sum is σ = 318741489396. Its totient is φ = 105173959072.

The previous prime is 211421122189. The next prime is 211421122219. The reversal of 211421122202 is 202221124112.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 144826674721 + 66594447481 = 380561^2 + 258059^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 268300523 + ... + 268301310.

Almost surely, 2^211421122202 is an apocalyptic number.

211421122202 is a deficient number, since it is larger than the sum of its proper divisors (107320367194).

211421122202 is a wasteful number, since it uses less digits than its factorization.

211421122202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536602032.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 211421122202 its reverse (202221124112), we get a palindrome (413642246314).

The spelling of 211421122202 in words is "two hundred eleven billion, four hundred twenty-one million, one hundred twenty-two thousand, two hundred two".