20021212100022 has 32 divisors (see below), whose sum is σ = 46878935652864. Its totient is φ = 5580825672000.

The previous prime is 20021212099963. The next prime is 20021212100081. The reversal of 20021212100022 is 22000121212002.

It is an interprime number because it is at equal distance from previous prime (20021212099963) and next prime (20021212100081).

It is a junction number, because it is equal to n+sod(n) for n = 20021212099974 and 20021212100010.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5813358354 + ... + 5813361797.

It is an arithmetic number, because the mean of its divisors is an integer number (1464966739152).

Almost surely, 2^{20021212100022} is an apocalyptic number.

20021212100022 is an abundant number, since it is smaller than the sum of its proper divisors (26857723552842).

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

20021212100022 is a wasteful number, since it uses less digits than its factorization.

20021212100022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11626720204.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20021212100022 its reverse (22000121212002), we get a palindrome (42021333312024).

The spelling of 20021212100022 in words is "twenty trillion, twenty-one billion, two hundred twelve million, one hundred thousand, twenty-two".