2067211621 has 4 divisors (see below), whose sum is σ = 2080378732. Its totient is φ = 2054044512.

The previous prime is 2067211603. The next prime is 2067211631. The reversal of 2067211621 is 1261127602.

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 1417522500 + 649689121 = 37650^2 + 25489^2 .

It is a cyclic number.

It is not a de Polignac number, because 2067211621 - 2⁵ = 2067211589 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 2067211621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2067211631) 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, 6583320 + ... + 6583633.

It is an arithmetic number, because the mean of its divisors is an integer number (520094683).

Almost surely, 2^2067211621 is an apocalyptic number.

It is an amenable number.

2067211621 is a deficient number, since it is larger than the sum of its proper divisors (13167111).

2067211621 is a wasteful number, since it uses less digits than its factorization.

2067211621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13167110.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2067211621 is about 45466.5989601158. The cubic root of 2067211621 is about 1273.8793939014.

The spelling of 2067211621 in words is "two billion, sixty-seven million, two hundred eleven thousand, six hundred twenty-one".