211010202021 has 16 divisors (see below), whose sum is σ = 291811822848. Its totient is φ = 135516312000.

The previous prime is 211010201993. The next prime is 211010202023. The reversal of 211010202021 is 120202010112.

It is not a de Polignac number, because 211010202021 - 2⁵ = 211010201989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211010201988 and 211010202006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211010202023) 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, 9399645 + ... + 9422066.

It is an arithmetic number, because the mean of its divisors is an integer number (18238238928).

Almost surely, 2^211010202021 is an apocalyptic number.

It is an amenable number.

211010202021 is a deficient number, since it is larger than the sum of its proper divisors (80801620827).

211010202021 is a wasteful number, since it uses less digits than its factorization.

211010202021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18821852.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211010202021 its reverse (120202010112), we get a palindrome (331212212133).

The spelling of 211010202021 in words is "two hundred eleven billion, ten million, two hundred two thousand, twenty-one".