2102001221010 has 64 divisors (see below), whose sum is σ = 5129086788864. Its totient is φ = 551174457600.

The previous prime is 2102001221003. The next prime is 2102001221011. The reversal of 2102001221010 is 101221002012.

It is not an unprimeable number, because it can be changed into a prime (2102001221011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5810352 + ... + 6161508.

It is an arithmetic number, because the mean of its divisors is an integer number (80141981076).

Almost surely, 2^{2102001221010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2102001221010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2564543394432).

2102001221010 is an abundant number, since it is smaller than the sum of its proper divisors (3027085567854).

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

2102001221010 is a wasteful number, since it uses less digits than its factorization.

2102001221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354499.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 2102001221010 its reverse (101221002012), we get a palindrome (2203222223022).

The spelling of 2102001221010 in words is "two trillion, one hundred two billion, one million, two hundred twenty-one thousand, ten".