20112212010221 has 8 divisors (see below), whose sum is σ = 20172756212544. Its totient is φ = 20051672921280.

The previous prime is 20112212010181. The next prime is 20112212010251. The reversal of 20112212010221 is 12201021221102.

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 20112212010221 - 2⁴² = 15714165499117 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 20112212010221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112212010251) 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, 6674336 + ... + 9207126.

It is an arithmetic number, because the mean of its divisors is an integer number (2521594526568).

Almost surely, 2^{20112212010221} is an apocalyptic number.

It is an amenable number.

20112212010221 is a deficient number, since it is larger than the sum of its proper divisors (60544202323).

20112212010221 is a wasteful number, since it uses less digits than its factorization.

20112212010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556691.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20112212010221 its reverse (12201021221102), we get a palindrome (32313233231323).

The spelling of 20112212010221 in words is "twenty trillion, one hundred twelve billion, two hundred twelve million, ten thousand, two hundred twenty-one".