1012012221 has 8 divisors (see below), whose sum is σ = 1472017824. Its totient is φ = 613340720.

The previous prime is 1012012201. The next prime is 1012012229. The reversal of 1012012221 is 1222102101.

1012012221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1012012221 - 2⁵ = 1012012189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1012012197 and 1012012206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012012229) 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, 15333486 + ... + 15333551.

It is an arithmetic number, because the mean of its divisors is an integer number (184002228).

Almost surely, 2^1012012221 is an apocalyptic number.

1012012221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1012012221 is a deficient number, since it is larger than the sum of its proper divisors (460005603).

1012012221 is a wasteful number, since it uses less digits than its factorization.

1012012221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30667051.

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

The square root of 1012012221 is about 31812.1395225156. The cubic root of 1012012221 is about 1003.9881472043.

Adding to 1012012221 its reverse (1222102101), we get a palindrome (2234114322).

The spelling of 1012012221 in words is "one billion, twelve million, twelve thousand, two hundred twenty-one".