20202121101012 has 24 divisors (see below), whose sum is σ = 47420547738816. Its totient is φ = 6693716771328.

The previous prime is 20202121100977. The next prime is 20202121101017. The reversal of 20202121101012 is 21010112120202.

It is a junction number, because it is equal to n+sod(n) for n = 20202121100982 and 20202121101000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20202121101017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5040447373 + ... + 5040451380.

It is an arithmetic number, because the mean of its divisors is an integer number (1975856155784).

Almost surely, 2^{20202121101012} is an apocalyptic number.

It is an amenable number.

20202121101012 is an abundant number, since it is smaller than the sum of its proper divisors (27218426637804).

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

20202121101012 is a wasteful number, since it uses less digits than its factorization.

20202121101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10080898927 (or 10080898925 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20202121101012 its reverse (21010112120202), we get a palindrome (41212233221214).

The spelling of 20202121101012 in words is "twenty trillion, two hundred two billion, one hundred twenty-one million, one hundred one thousand, twelve".