210201002122101 has 4 divisors (see below), whose sum is σ = 280268002829472. Its totient is φ = 140134001414732.

The previous prime is 210201002122081. The next prime is 210201002122117. The reversal of 210201002122101 is 101221200102012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 210201002122101 - 2¹⁸ = 210201001859957 is a prime.

It is a super-2 number, since 2×210201002122101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201002120101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35033500353681 + ... + 35033500353686.

It is an arithmetic number, because the mean of its divisors is an integer number (70067000707368).

Almost surely, 2^{210201002122101} is an apocalyptic number.

It is an amenable number.

210201002122101 is a deficient number, since it is larger than the sum of its proper divisors (70067000707371).

210201002122101 is an equidigital number, since it uses as much as digits as its factorization.

210201002122101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70067000707370.

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

Adding to 210201002122101 its reverse (101221200102012), we get a palindrome (311422202224113).

The spelling of 210201002122101 in words is "two hundred ten trillion, two hundred one billion, two million, one hundred twenty-two thousand, one hundred one".