21121333230201 has 32 divisors (see below), whose sum is σ = 29856264936960. Its totient is φ = 13244597784576.

The previous prime is 21121333230197. The next prime is 21121333230227. The reversal of 21121333230201 is 10203233312112.

It is not a de Polignac number, because 21121333230201 - 2² = 21121333230197 is a prime.

It is a super-2 number, since 2×21121333230201² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21121333230281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2148990 + ... + 6845496.

It is an arithmetic number, because the mean of its divisors is an integer number (933008279280).

Almost surely, 2^{21121333230201} is an apocalyptic number.

It is an amenable number.

21121333230201 is a deficient number, since it is larger than the sum of its proper divisors (8734931706759).

21121333230201 is a wasteful number, since it uses less digits than its factorization.

21121333230201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4697093.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 21121333230201 its reverse (10203233312112), we get a palindrome (31324566542313).

The spelling of 21121333230201 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred thirty-three million, two hundred thirty thousand, two hundred one".