210021002210121 has 8 divisors (see below), whose sum is σ = 280030049151840. Its totient is φ = 140012978370912.

The previous prime is 210021002210087. The next prime is 210021002210179. The reversal of 210021002210121 is 121012200120012.

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

It is not a de Polignac number, because 210021002210121 - 2²⁵ = 210020968655689 is a prime.

It is a super-3 number, since 3×210021002210121³ (a number of 44 digits) contains 333 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 210021002210121.

It is not an unprimeable number, because it can be changed into a prime (210021002210821) 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, 255296515 + ... + 256117848.

It is an arithmetic number, because the mean of its divisors is an integer number (35003756143980).

Almost surely, 2^{210021002210121} is an apocalyptic number.

It is an amenable number.

210021002210121 is a deficient number, since it is larger than the sum of its proper divisors (70009046941719).

210021002210121 is a wasteful number, since it uses less digits than its factorization.

210021002210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511551255.

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

Adding to 210021002210121 its reverse (121012200120012), we get a palindrome (331033202330133).

The spelling of 210021002210121 in words is "two hundred ten trillion, twenty-one billion, two million, two hundred ten thousand, one hundred twenty-one".