20212102102 has 16 divisors (see below), whose sum is σ = 31464482400. Its totient is φ = 9726183040.

The previous prime is 20212102063. The next prime is 20212102153. The reversal of 20212102102 is 20120121202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 542227 + ... + 578302.

It is an arithmetic number, because the mean of its divisors is an integer number (1966530150).

Almost surely, 2^20212102102 is an apocalyptic number.

20212102102 is a deficient number, since it is larger than the sum of its proper divisors (11252380298).

20212102102 is a wasteful number, since it uses less digits than its factorization.

20212102102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120871.

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

Adding to 20212102102 its reverse (20120121202), we get a palindrome (40332223304).

The spelling of 20212102102 in words is "twenty billion, two hundred twelve million, one hundred two thousand, one hundred two".