20102222020212 has 18 divisors (see below), whose sum is σ = 50813950106738. Its totient is φ = 6700740673392.

The previous prime is 20102222020211. The next prime is 20102222020213. The reversal of 20102222020212 is 21202022220102.

20102222020212 is a `hidden beast` number, since 20 + 10 + 222 + 202 + 0 + 212 = 666.

It is an interprime number because it is at equal distance from previous prime (20102222020211) and next prime (20102222020213).

It can be written as a sum of positive squares in only one way, i.e., 11842380508176 + 8259841512036 = 3441276^2 + 2873994^2 .

It is a tau number, because it is divible by the number of its divisors (18).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102222020211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 279197528023 + ... + 279197528094.

Almost surely, 2^{20102222020212} is an apocalyptic number.

It is an amenable number.

20102222020212 is an abundant number, since it is smaller than the sum of its proper divisors (30711728086526).

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

20102222020212 is a wasteful number, since it uses less digits than its factorization.

20102222020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558395056127 (or 558395056122 counting only the distinct ones).

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

Adding to 20102222020212 its reverse (21202022220102), we get a palindrome (41304244240314).

The spelling of 20102222020212 in words is "twenty trillion, one hundred two billion, two hundred twenty-two million, twenty thousand, two hundred twelve".