211421202041002 has 4 divisors (see below), whose sum is σ = 317131803061506. Its totient is φ = 105710601020500.

The previous prime is 211421202040991. The next prime is 211421202041081. The reversal of 211421202041002 is 200140202124112.

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., 166140267190681 + 45280934850321 = 12889541^2 + 6729111^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52855300510249 + ... + 52855300510252.

Almost surely, 2^{211421202041002} is an apocalyptic number.

211421202041002 is a deficient number, since it is larger than the sum of its proper divisors (105710601020504).

211421202041002 is a wasteful number, since it uses less digits than its factorization.

211421202041002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105710601020503.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 211421202041002 its reverse (200140202124112), we get a palindrome (411561404165114).

The spelling of 211421202041002 in words is "two hundred eleven trillion, four hundred twenty-one billion, two hundred two million, forty-one thousand, two".