201221023001301 has 24 divisors (see below), whose sum is σ = 291171400941720. Its totient is φ = 133907909861376.

The previous prime is 201221023001267. The next prime is 201221023001353. The reversal of 201221023001301 is 103100320122102.

201221023001301 is a `hidden beast` number, since 2 + 0 + 122 + 10 + 230 + 0 + 1 + 301 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 29658153564900 + 171562869436401 = 5445930^2 + 13098201^2 .

It is a de Polignac number, because none of the positive numbers 2^k-201221023001301 is a prime.

It is a super-2 number, since 2×201221023001301² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201221023000301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 192627861 + ... + 193669653.

It is an arithmetic number, because the mean of its divisors is an integer number (12132141705905).

Almost surely, 2^{201221023001301} is an apocalyptic number.

It is an amenable number.

201221023001301 is a deficient number, since it is larger than the sum of its proper divisors (89950377940419).

201221023001301 is a wasteful number, since it uses less digits than its factorization.

201221023001301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080085 (or 1080082 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 201221023001301 its reverse (103100320122102), we get a palindrome (304321343123403).

The spelling of 201221023001301 in words is "two hundred one trillion, two hundred twenty-one billion, twenty-three million, one thousand, three hundred one".