2012011221 has 8 divisors (see below), whose sum is σ = 2926561824. Its totient is φ = 1219400720.

The previous prime is 2012011207. The next prime is 2012011249. The reversal of 2012011221 is 1221102102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2012011221 - 2⁵ = 2012011189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2012011197 and 2012011206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012011291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30484986 + ... + 30485051.

It is an arithmetic number, because the mean of its divisors is an integer number (365820228).

Almost surely, 2^2012011221 is an apocalyptic number.

It is an amenable number.

2012011221 is a deficient number, since it is larger than the sum of its proper divisors (914550603).

2012011221 is a wasteful number, since it uses less digits than its factorization.

2012011221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60970051.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 2012011221 is about 44855.4480637525. The cubic root of 2012011221 is about 1262.4382159223.

Adding to 2012011221 its reverse (1221102102), we get a palindrome (3233113323).

The spelling of 2012011221 in words is "two billion, twelve million, eleven thousand, two hundred twenty-one".