211421041001 has 4 divisors (see below), whose sum is σ = 211634383104. Its totient is φ = 211207698900.

The previous prime is 211421040997. The next prime is 211421041019. The reversal of 211421041001 is 100140124112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211421041001 - 2² = 211421040997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211421041021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 106669565 + ... + 106671546.

It is an arithmetic number, because the mean of its divisors is an integer number (52908595776).

Almost surely, 2^211421041001 is an apocalyptic number.

It is an amenable number.

211421041001 is a deficient number, since it is larger than the sum of its proper divisors (213342103).

211421041001 is an equidigital number, since it uses as much as digits as its factorization.

211421041001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213342102.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 211421041001 its reverse (100140124112), we get a palindrome (311561165113).

The spelling of 211421041001 in words is "two hundred eleven billion, four hundred twenty-one million, forty-one thousand, one".