10012011221 has 8 divisors (see below), whose sum is σ = 10602070080. Its totient is φ = 9428263488.

The previous prime is 10012011179. The next prime is 10012011223. The reversal of 10012011221 is 12211021001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10012011221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10012011223) 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, 1574516 + ... + 1580861.

It is an arithmetic number, because the mean of its divisors is an integer number (1325258760).

Almost surely, 2^10012011221 is an apocalyptic number.

It is an amenable number.

10012011221 is a deficient number, since it is larger than the sum of its proper divisors (590058859).

10012011221 is a wasteful number, since it uses less digits than its factorization.

10012011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3155563.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 10012011221 its reverse (12211021001), we get a palindrome (22223032222).

The spelling of 10012011221 in words is "ten billion, twelve million, eleven thousand, two hundred twenty-one".