201202121001 has 16 divisors (see below), whose sum is σ = 306632853504. Its totient is φ = 114957961104.

The previous prime is 201202120991. The next prime is 201202121033. The reversal of 201202121001 is 100121202102.

201202121001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 201202121001 - 2¹³ = 201202112809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (201202121051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 442161 + ... + 773246.

It is an arithmetic number, because the mean of its divisors is an integer number (19164553344).

Almost surely, 2^201202121001 is an apocalyptic number.

201202121001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

201202121001 is a deficient number, since it is larger than the sum of its proper divisors (105430732503).

201202121001 is a wasteful number, since it uses less digits than its factorization.

201202121001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1223300.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 201202121001 its reverse (100121202102), we get a palindrome (301323323103).

It can be divided in two parts, 201 and 202121001, that added together give a palindrome (202121202).

The spelling of 201202121001 in words is "two hundred one billion, two hundred two million, one hundred twenty-one thousand, one".