211210100121021 has 8 divisors (see below), whose sum is σ = 281613850869504. Its totient is φ = 140806541393280.

The previous prime is 211210100120977. The next prime is 211210100121067. The reversal of 211210100121021 is 120121001012112.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 211210100121021 - 2¹¹ = 211210100118973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211210100131021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45418765 + ... + 49852626.

It is an arithmetic number, because the mean of its divisors is an integer number (35201731358688).

Almost surely, 2^{211210100121021} is an apocalyptic number.

It is an amenable number.

211210100121021 is a deficient number, since it is larger than the sum of its proper divisors (70403750748483).

211210100121021 is an equidigital number, since it uses as much as digits as its factorization.

211210100121021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96010371.

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

Adding to 211210100121021 its reverse (120121001012112), we get a palindrome (331331101133133).

The spelling of 211210100121021 in words is "two hundred eleven trillion, two hundred ten billion, one hundred million, one hundred twenty-one thousand, twenty-one".