20012212020222 has 128 divisors (see below), whose sum is σ = 47702701025280. Its totient is φ = 6196674908160.

The previous prime is 20012212020221. The next prime is 20012212020223. The reversal of 20012212020222 is 22202021221002.

20012212020222 is a `hidden beast` number, since 20 + 0 + 1 + 221 + 202 + 0 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (20012212020221) and next prime (20012212020223).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20012212020195 and 20012212020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012212020221) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 32373697 + ... + 32986067.

It is an arithmetic number, because the mean of its divisors is an integer number (372677351760).

Almost surely, 2^{20012212020222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012212020222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23851350512640).

20012212020222 is an abundant number, since it is smaller than the sum of its proper divisors (27690489005058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20012212020222 is a wasteful number, since it uses less digits than its factorization.

20012212020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612863 (or 612857 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20012212020222 its reverse (22202021221002), we get a palindrome (42214233241224).

The spelling of 20012212020222 in words is "twenty trillion, twelve billion, two hundred twelve million, twenty thousand, two hundred twenty-two".