20212021101212 has 12 divisors (see below), whose sum is σ = 35371068398736. Its totient is φ = 10106001558720.

The previous prime is 20212021101203. The next prime is 20212021101221. The reversal of 20212021101212 is 21210112021202.

It is an interprime number because it is at equal distance from previous prime (20212021101203) and next prime (20212021101221).

It is a congruent number.

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, 7781012 + ... + 10048292.

It is an arithmetic number, because the mean of its divisors is an integer number (2947589033228).

Almost surely, 2^{20212021101212} is an apocalyptic number.

It is an amenable number.

20212021101212 is a deficient number, since it is larger than the sum of its proper divisors (15159047297524).

20212021101212 is a wasteful number, since it uses less digits than its factorization.

20212021101212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4495948 (or 4495946 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20212021101212 its reverse (21210112021202), we get a palindrome (41422133122414).

The spelling of 20212021101212 in words is "twenty trillion, two hundred twelve billion, twenty-one million, one hundred one thousand, two hundred twelve".