20202103212 has 24 divisors (see below), whose sum is σ = 47269555200. Its totient is φ = 6715275216.

The previous prime is 20202103189. The next prime is 20202103223. The reversal of 20202103212 is 21230120202.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 20202103191 and 20202103200.

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, 2340412 + ... + 2349027.

It is an arithmetic number, because the mean of its divisors is an integer number (1969564800).

Almost surely, 2^20202103212 is an apocalyptic number.

It is an amenable number.

20202103212 is an abundant number, since it is smaller than the sum of its proper divisors (27067451988).

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

20202103212 is a wasteful number, since it uses less digits than its factorization.

20202103212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4689805 (or 4689803 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20202103212 its reverse (21230120202), we get a palindrome (41432223414).

The spelling of 20202103212 in words is "twenty billion, two hundred two million, one hundred three thousand, two hundred twelve".