20021110012212 has 24 divisors (see below), whose sum is σ = 46721509620576. Its totient is φ = 6672905300448.

The previous prime is 20021110012193. The next prime is 20021110012223. The reversal of 20021110012212 is 21221001112002.

It is a super-2 number, since 2×20021110012212² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021110012191 and 20021110012200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99650083 + ... + 99850794.

It is an arithmetic number, because the mean of its divisors is an integer number (1946729567524).

Almost surely, 2^{20021110012212} is an apocalyptic number.

It is an amenable number.

20021110012212 is an abundant number, since it is smaller than the sum of its proper divisors (26700399608364).

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

20021110012212 is a wasteful number, since it uses less digits than its factorization.

20021110012212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199509247 (or 199509245 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20021110012212 its reverse (21221001112002), we get a palindrome (41242111124214).

The spelling of 20021110012212 in words is "twenty trillion, twenty-one billion, one hundred ten million, twelve thousand, two hundred twelve".