20012212022122 has 8 divisors (see below), whose sum is σ = 30429527869476. Its totient is φ = 9869036065632.

The previous prime is 20012212022053. The next prime is 20012212022129. The reversal of 20012212022122 is 22122021221002.

It can be written as a sum of positive squares in 2 ways, for example, as 18618180784641 + 1394031237481 = 4314879^2 + 1180691^2 .

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 20012212022122.

It is not an unprimeable number, because it can be changed into a prime (20012212022129) 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, 68534972533 + ... + 68534972824.

Almost surely, 2^{20012212022122} is an apocalyptic number.

20012212022122 is a deficient number, since it is larger than the sum of its proper divisors (10417315847354).

20012212022122 is a wasteful number, since it uses less digits than its factorization.

20012212022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137069945432.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 20012212022122 its reverse (22122021221002), we get a palindrome (42134233243124).

The spelling of 20012212022122 in words is "twenty trillion, twelve billion, two hundred twelve million, twenty-two thousand, one hundred twenty-two".