20011211220122 has 8 divisors (see below), whose sum is σ = 30748934313972. Its totient is φ = 9761566448800.

The previous prime is 20011211220109. The next prime is 20011211220131. The reversal of 20011211220122 is 22102211211002.

It can be written as a sum of positive squares in 2 ways, for example, as 13308699275881 + 6702511944241 = 3648109^2 + 2588921^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 20011211220122.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 122019580529 + ... + 122019580692.

Almost surely, 2^{20011211220122} is an apocalyptic number.

20011211220122 is a deficient number, since it is larger than the sum of its proper divisors (10737723093850).

20011211220122 is a wasteful number, since it uses less digits than its factorization.

20011211220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244039161264.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20011211220122 its reverse (22102211211002), we get a palindrome (42113422431124).

The spelling of 20011211220122 in words is "twenty trillion, eleven billion, two hundred eleven million, two hundred twenty thousand, one hundred twenty-two".