211421010002 has 4 divisors (see below), whose sum is σ = 317131515006. Its totient is φ = 105710505000.

The previous prime is 211421009981. The next prime is 211421010007. The reversal of 211421010002 is 200010124112.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 164123024641 + 47297985361 = 405121^2 + 217481^2 .

It is not an unprimeable number, because it can be changed into a prime (211421010007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52855252499 + ... + 52855252502.

Almost surely, 2^211421010002 is an apocalyptic number.

211421010002 is a deficient number, since it is larger than the sum of its proper divisors (105710505004).

211421010002 is a wasteful number, since it uses less digits than its factorization.

211421010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105710505003.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 211421010002 its reverse (200010124112), we get a palindrome (411431134114).

It can be divided in two parts, 2114210 and 10002, that added together give a palindrome (2124212).

The spelling of 211421010002 in words is "two hundred eleven billion, four hundred twenty-one million, ten thousand, two".