211210210011021 has 16 divisors (see below), whose sum is σ = 303276586589760. Its totient is φ = 129975347738880.

The previous prime is 211210210011019. The next prime is 211210210011037. The reversal of 211210210011021 is 120110012012112.

It is a happy number.

It is not a de Polignac number, because 211210210011021 - 2¹ = 211210210011019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210210011041) 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, 32061285 + ... + 38083413.

It is an arithmetic number, because the mean of its divisors is an integer number (18954786661860).

Almost surely, 2^{211210210011021} is an apocalyptic number.

It is an amenable number.

211210210011021 is a deficient number, since it is larger than the sum of its proper divisors (92066376578739).

211210210011021 is a wasteful number, since it uses less digits than its factorization.

211210210011021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6921436.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 211210210011021 its reverse (120110012012112), we get a palindrome (331320222023133).

The spelling of 211210210011021 in words is "two hundred eleven trillion, two hundred ten billion, two hundred ten million, eleven thousand, twenty-one".