2021111344410 has 128 divisors (see below), whose sum is σ = 5138148639744. Its totient is φ = 508156185600.

The previous prime is 2021111344409. The next prime is 2021111344451. The reversal of 2021111344410 is 144431111202.

It is a happy number.

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, 5077384 + ... + 5460956.

It is an arithmetic number, because the mean of its divisors is an integer number (40141786248).

Almost surely, 2^{2021111344410} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2021111344410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2569074319872).

2021111344410 is an abundant number, since it is smaller than the sum of its proper divisors (3117037295334).

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

2021111344410 is a wasteful number, since it uses less digits than its factorization.

2021111344410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 383768.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 2021111344410 its reverse (144431111202), we get a palindrome (2165542455612).

The spelling of 2021111344410 in words is "two trillion, twenty-one billion, one hundred eleven million, three hundred forty-four thousand, four hundred ten".