2012022621 has 12 divisors (see below), whose sum is σ = 3321434272. Its totient is φ = 1149727176.

The previous prime is 2012022601. The next prime is 2012022631. The reversal of 2012022621 is 1262202102.

2012022621 is a `hidden beast` number, since 2 + 0 + 1 + 20 + 22 + 621 = 666.

It is not a de Polignac number, because 2012022621 - 2¹¹ = 2012020573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2012022594 and 2012022603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012022601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15968371 + ... + 15968496.

Almost surely, 2^2012022621 is an apocalyptic number.

2012022621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2012022621 is a deficient number, since it is larger than the sum of its proper divisors (1309411651).

2012022621 is a wasteful number, since it uses less digits than its factorization.

2012022621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31936880 (or 31936877 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 2012022621 is about 44855.5751384374. The cubic root of 2012022621 is about 1262.4406002312.

Adding to 2012022621 its reverse (1262202102), we get a palindrome (3274224723).

The spelling of 2012022621 in words is "two billion, twelve million, twenty-two thousand, six hundred twenty-one".