20212222011 has 8 divisors (see below), whose sum is σ = 26950644240. Its totient is φ = 13474307232.

The previous prime is 20212222007. The next prime is 20212222033. The reversal of 20212222011 is 11022221202.

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

It is not a de Polignac number, because 20212222011 - 2² = 20212222007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20212222061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21396 + ... + 202193.

It is an arithmetic number, because the mean of its divisors is an integer number (3368830530).

Almost surely, 2^20212222011 is an apocalyptic number.

20212222011 is a deficient number, since it is larger than the sum of its proper divisors (6738422229).

20212222011 is a wasteful number, since it uses less digits than its factorization.

20212222011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253725.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20212222011 its reverse (11022221202), we get a palindrome (31234443213).

The spelling of 20212222011 in words is "twenty billion, two hundred twelve million, two hundred twenty-two thousand, eleven".