210101021121021 has 8 divisors (see below), whose sum is σ = 280143199094304. Its totient is φ = 140063095280880.

The previous prime is 210101021120999. The next prime is 210101021121029. The reversal of 210101021121021 is 120121120101012.

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 210101021121021 - 2¹⁵ = 210101021088253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210101021121029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062917991 + ... + 1063115636.

It is an arithmetic number, because the mean of its divisors is an integer number (35017899886788).

Almost surely, 2^{210101021121021} is an apocalyptic number.

It is an amenable number.

210101021121021 is a deficient number, since it is larger than the sum of its proper divisors (70042177973283).

210101021121021 is a wasteful number, since it uses less digits than its factorization.

210101021121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2126066571.

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

Adding to 210101021121021 its reverse (120121120101012), we get a palindrome (330222141222033).

The spelling of 210101021121021 in words is "two hundred ten trillion, one hundred one billion, twenty-one million, one hundred twenty-one thousand, twenty-one".