202122112001 has 4 divisors (see below), whose sum is σ = 202130901252. Its totient is φ = 202113322752.

The previous prime is 202122111979. The next prime is 202122112033. The reversal of 202122112001 is 100211221202.

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 95140785601 + 106981326400 = 308449^2 + 327080^2 .

It is a cyclic number.

It is not a de Polignac number, because 202122112001 - 2²² = 202117917697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202122112201) 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, 4360040 + ... + 4406153.

It is an arithmetic number, because the mean of its divisors is an integer number (50532725313).

Almost surely, 2^202122112001 is an apocalyptic number.

It is an amenable number.

202122112001 is a deficient number, since it is larger than the sum of its proper divisors (8789251).

202122112001 is an equidigital number, since it uses as much as digits as its factorization.

202122112001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8789250.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 202122112001 its reverse (100211221202), we get a palindrome (302333333203).

The spelling of 202122112001 in words is "two hundred two billion, one hundred twenty-two million, one hundred twelve thousand, one".