20102212122228 has 36 divisors (see below), whose sum is σ = 50814068905600. Its totient is φ = 6700718408976.

The previous prime is 20102212122197. The next prime is 20102212122229. The reversal of 20102212122228 is 82222121220102.

20102212122228 is a `hidden beast` number, since 2 + 0 + 1 + 0 + 221 + 212 + 2 + 228 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×20102212122228² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20102212122229) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18672573 + ... + 19719771.

Almost surely, 2^{20102212122228} is an apocalyptic number.

It is an amenable number.

20102212122228 is an abundant number, since it is smaller than the sum of its proper divisors (30711856783372).

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

20102212122228 is a wasteful number, since it uses less digits than its factorization.

20102212122228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1580436 (or 1580431 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The spelling of 20102212122228 in words is "twenty trillion, one hundred two billion, two hundred twelve million, one hundred twenty-two thousand, two hundred twenty-eight".