2001022120210 has 8 divisors (see below), whose sum is σ = 3601839816396. Its totient is φ = 800408848080.

The previous prime is 2001022120189. The next prime is 2001022120259. The reversal of 2001022120210 is 120212201002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1706213300841 + 294808819369 = 1306221^2 + 542963^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 100051106001 + ... + 100051106020.

Almost surely, 2^{2001022120210} is an apocalyptic number.

2001022120210 is a deficient number, since it is larger than the sum of its proper divisors (1600817696186).

2001022120210 is a wasteful number, since it uses less digits than its factorization.

2001022120210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200102212028.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2001022120210 its reverse (120212201002), we get a palindrome (2121234321212).

The spelling of 2001022120210 in words is "two trillion, one billion, twenty-two million, one hundred twenty thousand, two hundred ten".