2001122021210 has 192 divisors, whose sum is σ = 4144020072192. Its totient is φ = 690231066624.

The previous prime is 2001122021203. The next prime is 2001122021237. The reversal of 2001122021210 is 121202211002.

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 2335031102 + ... + 2335031958.

It is an arithmetic number, because the mean of its divisors is an integer number (21583437876).

Almost surely, 2^{2001122021210} is an apocalyptic number.

2001122021210 is an abundant number, since it is smaller than the sum of its proper divisors (2142898050982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2001122021210 is a wasteful number, since it uses less digits than its factorization.

2001122021210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1177 (or 1080 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 2001122021210 its reverse (121202211002), we get a palindrome (2122324232212).

The spelling of 2001122021210 in words is "two trillion, one billion, one hundred twenty-two million, twenty-one thousand, two hundred ten".