2111221001010 has 128 divisors (see below), whose sum is σ = 5819883955200. Its totient is φ = 484757118720.

The previous prime is 2111221000951. The next prime is 2111221001059. The reversal of 2111221001010 is 101001221112.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27530901 + ... + 27607479.

It is an arithmetic number, because the mean of its divisors is an integer number (45467843400).

Almost surely, 2^{2111221001010} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2111221001010, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2909941977600).

2111221001010 is an abundant number, since it is smaller than the sum of its proper divisors (3708662954190).

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

2111221001010 is a wasteful number, since it uses less digits than its factorization.

2111221001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81016.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 2111221001010 its reverse (101001221112), we get a palindrome (2212222222122).

It can be divided in two parts, 211 and 1221001010, that added together give a palindrome (1221001221).

The spelling of 2111221001010 in words is "two trillion, one hundred eleven billion, two hundred twenty-one million, one thousand, ten".