20212221010 has 32 divisors (see below), whose sum is σ = 36649972800. Its totient is φ = 8025410112.

The previous prime is 20212220981. The next prime is 20212221011. The reversal of 20212221010 is 1012221202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20212221011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2957217 + ... + 2964043.

It is an arithmetic number, because the mean of its divisors is an integer number (1145311650).

Almost surely, 2^20212221010 is an apocalyptic number.

20212221010 is a deficient number, since it is larger than the sum of its proper divisors (16437751790).

20212221010 is a wasteful number, since it uses less digits than its factorization.

20212221010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8970.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20212221010 its reverse (1012221202), we get a palindrome (21224442212).

The spelling of 20212221010 in words is "twenty billion, two hundred twelve million, two hundred twenty-one thousand, ten".