20202121012012 has 48 divisors (see below), whose sum is σ = 37641785126400. Its totient is φ = 9459861920640.

The previous prime is 20202121012009. The next prime is 20202121012033. The reversal of 20202121012012 is 21021012120202.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2186337 + ... + 6721927.

It is an arithmetic number, because the mean of its divisors is an integer number (784203856800).

Almost surely, 2^{20202121012012} is an apocalyptic number.

It is an amenable number.

20202121012012 is a deficient number, since it is larger than the sum of its proper divisors (17439664114388).

20202121012012 is a wasteful number, since it uses less digits than its factorization.

20202121012012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4536286 (or 4536284 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20202121012012 its reverse (21021012120202), we get a palindrome (41223133132214).

The spelling of 20202121012012 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, twelve thousand, twelve".