20111220002122 has 8 divisors (see below), whose sum is σ = 30180999492900. Its totient is φ = 10050886837824.

The previous prime is 20111220002119. The next prime is 20111220002123. The reversal of 20111220002122 is 22120002211102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19980891060001 + 130328942121 = 4469999^2 + 361011^2 .

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

It is a super-2 number, since 2×20111220002122² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20111220002096 and 20111220002105.

It is not an unprimeable number, because it can be changed into a prime (20111220002123) 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, 2361576297 + ... + 2361584812.

Almost surely, 2^{20111220002122} is an apocalyptic number.

20111220002122 is a deficient number, since it is larger than the sum of its proper divisors (10069779490778).

20111220002122 is a wasteful number, since it uses less digits than its factorization.

20111220002122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4723163240.

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

Adding to 20111220002122 its reverse (22120002211102), we get a palindrome (42231222213224).

The spelling of 20111220002122 in words is "twenty trillion, one hundred eleven billion, two hundred twenty million, two thousand, one hundred twenty-two".