3501221111011 has 4 divisors (see below), whose sum is σ = 3770545811872. Its totient is φ = 3231896410152.

The previous prime is 3501221110999. The next prime is 3501221111057. The reversal of 3501221111011 is 1101111221053.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3501221111011 - 2¹⁷ = 3501220979939 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 3501221111011.

It is not an unprimeable number, because it can be changed into a prime (3501231111011) 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, 134662350411 + ... + 134662350436.

It is an arithmetic number, because the mean of its divisors is an integer number (942636452968).

Almost surely, 2^{3501221111011} is an apocalyptic number.

3501221111011 is a deficient number, since it is larger than the sum of its proper divisors (269324700861).

3501221111011 is a wasteful number, since it uses less digits than its factorization.

3501221111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269324700860.

The product of its (nonzero) digits is 60, while the sum is 19.

Adding to 3501221111011 its reverse (1101111221053), we get a palindrome (4602332332064).

The spelling of 3501221111011 in words is "three trillion, five hundred one billion, two hundred twenty-one million, one hundred eleven thousand, eleven".