20021020220212 has 24 divisors (see below), whose sum is σ = 38224662154560. Its totient is φ = 9099817436160.

The previous prime is 20021020220183. The next prime is 20021020220261. The reversal of 20021020220212 is 21202202012002.

It is a congruent number.

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, 15530637 + ... + 16770292.

It is an arithmetic number, because the mean of its divisors is an integer number (1592694256440).

Almost surely, 2^{20021020220212} is an apocalyptic number.

20021020220212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20021020220212 is a deficient number, since it is larger than the sum of its proper divisors (18203641934348).

20021020220212 is a wasteful number, since it uses less digits than its factorization.

20021020220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32315031 (or 32315029 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 20021020220212 its reverse (21202202012002), we get a palindrome (41223222232214).

The spelling of 20021020220212 in words is "twenty trillion, twenty-one billion, twenty million, two hundred twenty thousand, two hundred twelve".