210202222112121 has 8 divisors (see below), whose sum is σ = 280276869315040. Its totient is φ = 140131194825312.

The previous prime is 210202222112117. The next prime is 210202222112153. The reversal of 210202222112121 is 121211222202012.

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

It is not a de Polignac number, because 210202222112121 - 2² = 210202222112117 is a prime.

It is a super-3 number, since 3×210202222112121³ (a number of 44 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210202222112221) 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, 904843531 + ... + 905075808.

It is an arithmetic number, because the mean of its divisors is an integer number (35034608664380).

Almost surely, 2^{210202222112121} is an apocalyptic number.

It is an amenable number.

210202222112121 is a deficient number, since it is larger than the sum of its proper divisors (70074647202919).

210202222112121 is a wasteful number, since it uses less digits than its factorization.

210202222112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809958055.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 210202222112121 its reverse (121211222202012), we get a palindrome (331413444314133).

The spelling of 210202222112121 in words is "two hundred ten trillion, two hundred two billion, two hundred twenty-two million, one hundred twelve thousand, one hundred twenty-one".