20111322212 has 24 divisors (see below), whose sum is σ = 35814256800. Its totient is φ = 9878895936.

The previous prime is 20111322211. The next prime is 20111322223. The reversal of 20111322212 is 21222311102.

It is a super-2 number, since 2×20111322212² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20111322211) 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, 353243 + ... + 406205.

It is an arithmetic number, because the mean of its divisors is an integer number (1492260700).

Almost surely, 2^20111322212 is an apocalyptic number.

It is an amenable number.

20111322212 is a deficient number, since it is larger than the sum of its proper divisors (15702934588).

20111322212 is a wasteful number, since it uses less digits than its factorization.

20111322212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54635 (or 54633 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20111322212 its reverse (21222311102), we get a palindrome (41333633314).

The spelling of 20111322212 in words is "twenty billion, one hundred eleven million, three hundred twenty-two thousand, two hundred twelve".