20021213110 has 16 divisors (see below), whose sum is σ = 36044676000. Its totient is φ = 8007042496.

The previous prime is 20021213077. The next prime is 20021213129. The reversal of 20021213110 is 1131212002.

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, 121135 + ... + 233914.

It is an arithmetic number, because the mean of its divisors is an integer number (2252792250).

Almost surely, 2^20021213110 is an apocalyptic number.

20021213110 is a deficient number, since it is larger than the sum of its proper divisors (16023462890).

20021213110 is a wasteful number, since it uses less digits than its factorization.

20021213110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360695.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20021213110 its reverse (1131212002), we get a palindrome (21152425112).

The spelling of 20021213110 in words is "twenty billion, twenty-one million, two hundred thirteen thousand, one hundred ten".