3502111112021 has 4 divisors (see below), whose sum is σ = 3502114856544. Its totient is φ = 3502107367500.

The previous prime is 3502111111999. The next prime is 3502111112023. The reversal of 3502111112021 is 1202111112053.

3502111112021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 3502111112021 - 2³⁰ = 3501037370197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3502111111984 and 3502111112002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3502111112023) 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, 850616 + ... + 2779886.

It is an arithmetic number, because the mean of its divisors is an integer number (875528714136).

Almost surely, 2^{3502111112021} is an apocalyptic number.

It is an amenable number.

3502111112021 is a deficient number, since it is larger than the sum of its proper divisors (3744523).

3502111112021 is a wasteful number, since it uses less digits than its factorization.

3502111112021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3744522.

The product of its (nonzero) digits is 120, while the sum is 20.

Adding to 3502111112021 its reverse (1202111112053), we get a palindrome (4704222224074).

The spelling of 3502111112021 in words is "three trillion, five hundred two billion, one hundred eleven million, one hundred twelve thousand, twenty-one".