20211122122 has 8 divisors (see below), whose sum is σ = 30397962276. Its totient is φ = 10078468032.

The previous prime is 20211122101. The next prime is 20211122123. The reversal of 20211122122 is 22122111202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20073505761 + 137616361 = 141681^2 + 11731^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 20211122096 and 20211122105.

It is not an unprimeable number, because it can be changed into a prime (20211122123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13545583 + ... + 13547074.

Almost surely, 2^20211122122 is an apocalyptic number.

20211122122 is a deficient number, since it is larger than the sum of its proper divisors (10186840154).

20211122122 is a wasteful number, since it uses less digits than its factorization.

20211122122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27093032.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20211122122 its reverse (22122111202), we get a palindrome (42333233324).

The spelling of 20211122122 in words is "twenty billion, two hundred eleven million, one hundred twenty-two thousand, one hundred twenty-two".