20212100202212 has 24 divisors (see below), whose sum is σ = 35387485077336. Its totient is φ = 10101390778368.

The previous prime is 20212100202187. The next prime is 20212100202269. The reversal of 20212100202212 is 21220200121202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 6162677160676 + 14049423041536 = 2482474^2 + 3748256^2 .

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, 152786048 + ... + 152918280.

It is an arithmetic number, because the mean of its divisors is an integer number (1474478544889).

Almost surely, 2^{20212100202212} is an apocalyptic number.

It is an amenable number.

20212100202212 is a deficient number, since it is larger than the sum of its proper divisors (15175384875124).

20212100202212 is a wasteful number, since it uses less digits than its factorization.

20212100202212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149567 (or 149565 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20212100202212 its reverse (21220200121202), we get a palindrome (41432300323414).

The spelling of 20212100202212 in words is "twenty trillion, two hundred twelve billion, one hundred million, two hundred two thousand, two hundred twelve".