211021010001 has 16 divisors (see below), whose sum is σ = 312746948800. Its totient is φ = 140625219744.

The previous prime is 211021009999. The next prime is 211021010003. The reversal of 211021010001 is 100010120112.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (211021009999) and next prime (211021010003).

It is not a de Polignac number, because 211021010001 - 2¹ = 211021009999 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211021010003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1470556 + ... + 1607661.

It is an arithmetic number, because the mean of its divisors is an integer number (19546684300).

Almost surely, 2^211021010001 is an apocalyptic number.

It is an amenable number.

211021010001 is a deficient number, since it is larger than the sum of its proper divisors (101725938799).

211021010001 is a wasteful number, since it uses less digits than its factorization.

211021010001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3080765 (or 3080759 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 211021010001 its reverse (100010120112), we get a palindrome (311031130113).

The spelling of 211021010001 in words is "two hundred eleven billion, twenty-one million, ten thousand, one".