20110221022212 has 36 divisors (see below), whose sum is σ = 50836381792560. Its totient is φ = 6703115316912.

The previous prime is 20110221022211. The next prime is 20110221022237. The reversal of 20110221022212 is 21222012201102.

It is a happy number.

20110221022212 is a `hidden beast` number, since 201 + 10 + 221 + 0 + 22 + 212 = 666.

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

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

It is not an unprimeable number, because it can be changed into a prime (20110221022211) 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, 11314162 + ... + 12970377.

It is an arithmetic number, because the mean of its divisors is an integer number (1412121716460).

Almost surely, 2^{20110221022212} is an apocalyptic number.

It is an amenable number.

20110221022212 is an abundant number, since it is smaller than the sum of its proper divisors (30726160770348).

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

20110221022212 is a wasteful number, since it uses less digits than its factorization.

20110221022212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24307552 (or 24307547 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20110221022212 its reverse (21222012201102), we get a palindrome (41332233223314).

The spelling of 20110221022212 in words is "twenty trillion, one hundred ten billion, two hundred twenty-one million, twenty-two thousand, two hundred twelve".