211421023007 has 2 divisors, whose sum is σ = 211421023008. Its totient is φ = 211421023006.

The previous prime is 211421023001. The next prime is 211421023027. The reversal of 211421023007 is 700320124112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 211421023007 - 2⁴ = 211421022991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (211421023001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105710511503 + 105710511504.

It is an arithmetic number, because the mean of its divisors is an integer number (105710511504).

Almost surely, 2^211421023007 is an apocalyptic number.

211421023007 is a deficient number, since it is larger than the sum of its proper divisors (1).

211421023007 is an equidigital number, since it uses as much as digits as its factorization.

211421023007 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 23.

Adding to 211421023007 its reverse (700320124112), we get a palindrome (911741147119).

The spelling of 211421023007 in words is "two hundred eleven billion, four hundred twenty-one million, twenty-three thousand, seven".