20202111212 has 12 divisors (see below), whose sum is σ = 35385754656. Its totient is φ = 10091895600.

The previous prime is 20202111199. The next prime is 20202111239. The reversal of 20202111212 is 21211120202.

It is a super-2 number, since 2×20202111212² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2285039 + ... + 2293862.

It is an arithmetic number, because the mean of its divisors is an integer number (2948812888).

Almost surely, 2^20202111212 is an apocalyptic number.

It is an amenable number.

20202111212 is a deficient number, since it is larger than the sum of its proper divisors (15183643444).

20202111212 is a wasteful number, since it uses less digits than its factorization.

20202111212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4580008 (or 4580006 counting only the distinct ones).

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

Adding to 20202111212 its reverse (21211120202), we get a palindrome (41413231414).

The spelling of 20202111212 in words is "twenty billion, two hundred two million, one hundred eleven thousand, two hundred twelve".