20211200122 has 8 divisors (see below), whose sum is σ = 30318529716. Its totient is φ = 10105023552.

The previous prime is 20211200117. The next prime is 20211200129. The reversal of 20211200122 is 22100211202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19790581041 + 420619081 = 140679^2 + 20509^2 .

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

It is a super-2 number, since 2×20211200122² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20211200129) 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, 243013 + ... + 315400.

Almost surely, 2^20211200122 is an apocalyptic number.

20211200122 is a deficient number, since it is larger than the sum of its proper divisors (10107329594).

20211200122 is a wasteful number, since it uses less digits than its factorization.

20211200122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576512.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20211200122 its reverse (22100211202), we get a palindrome (42311411324).

The spelling of 20211200122 in words is "twenty billion, two hundred eleven million, two hundred thousand, one hundred twenty-two".