20212211221213 has 32 divisors (see below), whose sum is σ = 23070634876800. Its totient is φ = 17545772467200.

The previous prime is 20212211221211. The next prime is 20212211221219. The reversal of 20212211221213 is 31212211221202.

It is a cyclic number.

It is not a de Polignac number, because 20212211221213 - 2¹ = 20212211221211 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 (20212211221211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4434945 + ... + 7751977.

It is an arithmetic number, because the mean of its divisors is an integer number (720957339900).

Almost surely, 2^{20212211221213} is an apocalyptic number.

It is an amenable number.

20212211221213 is a deficient number, since it is larger than the sum of its proper divisors (2858423655587).

20212211221213 is a wasteful number, since it uses less digits than its factorization.

20212211221213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3317373.

The product of its (nonzero) digits is 384, while the sum is 22.

Adding to 20212211221213 its reverse (31212211221202), we get a palindrome (51424422442415).

The spelling of 20212211221213 in words is "twenty trillion, two hundred twelve billion, two hundred eleven million, two hundred twenty-one thousand, two hundred thirteen".