211420221002 has 4 divisors (see below), whose sum is σ = 317130331506. Its totient is φ = 105710110500.

The previous prime is 211420220981. The next prime is 211420221011. The reversal of 211420221002 is 200122024112.

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., 209790564841 + 1629656161 = 458029^2 + 40369^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52855055249 + ... + 52855055252.

Almost surely, 2^211420221002 is an apocalyptic number.

211420221002 is a deficient number, since it is larger than the sum of its proper divisors (105710110504).

211420221002 is a wasteful number, since it uses less digits than its factorization.

211420221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105710110503.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 211420221002 its reverse (200122024112), we get a palindrome (411542245114).

The spelling of 211420221002 in words is "two hundred eleven billion, four hundred twenty million, two hundred twenty-one thousand, two".