2123213021201 has 16 divisors (see below), whose sum is σ = 2178864385488. Its totient is φ = 2068491264000.

The previous prime is 2123213021177. The next prime is 2123213021207. The reversal of 2123213021201 is 1021203123212.

It can be written as a sum of positive squares in 8 ways, for example, as 127206355600 + 1996006665601 = 356660^2 + 1412801^2 .

It is a cyclic number.

It is not a de Polignac number, because 2123213021201 - 2¹⁰ = 2123213020177 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2123213021207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1068521 + ... + 2321241.

It is an arithmetic number, because the mean of its divisors is an integer number (136179024093).

Almost surely, 2^{2123213021201} is an apocalyptic number.

It is an amenable number.

2123213021201 is a deficient number, since it is larger than the sum of its proper divisors (55651364287).

2123213021201 is a wasteful number, since it uses less digits than its factorization.

2123213021201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1253092.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 2123213021201 its reverse (1021203123212), we get a palindrome (3144416144413).

The spelling of 2123213021201 in words is "two trillion, one hundred twenty-three billion, two hundred thirteen million, twenty-one thousand, two hundred one".