210020021021121 has 8 divisors (see below), whose sum is σ = 280029067128864. Its totient is φ = 140012161130400.

The previous prime is 210020021021113. The next prime is 210020021021143. The reversal of 210020021021121 is 121120120020012.

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

It is not a de Polignac number, because 210020021021121 - 2³ = 210020021021113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 210020021021121.

It is not an unprimeable number, because it can be changed into a prime (210020021021821) 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, 296141055 + ... + 296849396.

It is an arithmetic number, because the mean of its divisors is an integer number (35003633391108).

Almost surely, 2^{210020021021121} is an apocalyptic number.

It is an amenable number.

210020021021121 is a deficient number, since it is larger than the sum of its proper divisors (70009046107743).

210020021021121 is a wasteful number, since it uses less digits than its factorization.

210020021021121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593108511.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 210020021021121 its reverse (121120120020012), we get a palindrome (331140141041133).

The spelling of 210020021021121 in words is "two hundred ten trillion, twenty billion, twenty-one million, twenty-one thousand, one hundred twenty-one".