210220121000121 has 8 divisors (see below), whose sum is σ = 280293754318560. Its totient is φ = 140146617507552.

The previous prime is 210220121000119. The next prime is 210220121000143. The reversal of 210220121000121 is 121000121022012.

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

It is not a de Polignac number, because 210220121000121 - 2¹ = 210220121000119 is a prime.

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 210220121000121.

It is not an unprimeable number, because it can be changed into a prime (210220121000161) 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, 28613211 + ... + 35201648.

It is an arithmetic number, because the mean of its divisors is an integer number (35036719289820).

Almost surely, 2^{210220121000121} is an apocalyptic number.

It is an amenable number.

210220121000121 is a deficient number, since it is larger than the sum of its proper divisors (70073633318439).

210220121000121 is a wasteful number, since it uses less digits than its factorization.

210220121000121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64912935.

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

Adding to 210220121000121 its reverse (121000121022012), we get a palindrome (331220242022133).

The spelling of 210220121000121 in words is "two hundred ten trillion, two hundred twenty billion, one hundred twenty-one million, one hundred twenty-one", and thus it is an aban number.