20021210012102 has 32 divisors (see below), whose sum is σ = 34824836541600. Its totient is φ = 8549589477888.

The previous prime is 20021210012003. The next prime is 20021210012117. The reversal of 20021210012102 is 20121001212002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 383845577 + ... + 383897732.

It is an arithmetic number, because the mean of its divisors is an integer number (1088276141925).

Almost surely, 2^{20021210012102} is an apocalyptic number.

20021210012102 is a deficient number, since it is larger than the sum of its proper divisors (14803626529498).

20021210012102 is a wasteful number, since it uses less digits than its factorization.

20021210012102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767743400.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20021210012102 its reverse (20121001212002), we get a palindrome (40142211224104).

The spelling of 20021210012102 in words is "twenty trillion, twenty-one billion, two hundred ten million, twelve thousand, one hundred two".