1210021210201 has 8 divisors (see below), whose sum is σ = 1212543707400. Its totient is φ = 1207501249920.

The previous prime is 1210021210133. The next prime is 1210021210219. The reversal of 1210021210201 is 1020121200121.

It can be written as a sum of positive squares in 4 ways, for example, as 532323456025 + 677697754176 = 729605^2 + 823224^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1210021210201 - 2¹³ = 1210021202009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1210021210501) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 322195 + ... + 1588663.

It is an arithmetic number, because the mean of its divisors is an integer number (151567963425).

Almost surely, 2^{1210021210201} is an apocalyptic number.

It is an amenable number.

1210021210201 is a deficient number, since it is larger than the sum of its proper divisors (2522497199).

1210021210201 is a wasteful number, since it uses less digits than its factorization.

1210021210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268459.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1210021210201 its reverse (1020121200121), we get a palindrome (2230142410322).

The spelling of 1210021210201 in words is "one trillion, two hundred ten billion, twenty-one million, two hundred ten thousand, two hundred one".