3402111211021 has 4 divisors (see below), whose sum is σ = 3402117910044. Its totient is φ = 3402104512000.

The previous prime is 3402111211019. The next prime is 3402111211027. The reversal of 3402111211021 is 1201121112043.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1576204920900 + 1825906290121 = 1255470^2 + 1351261^2 .

It is a cyclic number.

It is not a de Polignac number, because 3402111211021 - 2¹ = 3402111211019 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3402111211021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3402111211027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2519110 + ... + 3626311.

It is an arithmetic number, because the mean of its divisors is an integer number (850529477511).

Almost surely, 2^{3402111211021} is an apocalyptic number.

It is an amenable number.

3402111211021 is a deficient number, since it is larger than the sum of its proper divisors (6699023).

3402111211021 is an equidigital number, since it uses as much as digits as its factorization.

3402111211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6699022.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 3402111211021 its reverse (1201121112043), we get a palindrome (4603232323064).

The spelling of 3402111211021 in words is "three trillion, four hundred two billion, one hundred eleven million, two hundred eleven thousand, twenty-one".