210122120221201 has 4 divisors (see below), whose sum is σ = 212049846094900. Its totient is φ = 208194394347504.

The previous prime is 210122120221121. The next prime is 210122120221243. The reversal of 210122120221201 is 102122021221012.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111672563490576 + 98449556730625 = 10567524^2 + 9922175^2 .

It is a cyclic number.

It is not a de Polignac number, because 210122120221201 - 2¹¹ = 210122120219153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210122120221001) 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, 963862936686 + ... + 963862936903.

It is an arithmetic number, because the mean of its divisors is an integer number (53012461523725).

Almost surely, 2^{210122120221201} is an apocalyptic number.

It is an amenable number.

210122120221201 is a deficient number, since it is larger than the sum of its proper divisors (1927725873699).

210122120221201 is a wasteful number, since it uses less digits than its factorization.

210122120221201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1927725873698.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 210122120221201 its reverse (102122021221012), we get a palindrome (312244141442213).

The spelling of 210122120221201 in words is "two hundred ten trillion, one hundred twenty-two billion, one hundred twenty million, two hundred twenty-one thousand, two hundred one".