20021212020022 has 4 divisors (see below), whose sum is σ = 30031818030036. Its totient is φ = 10010606010010.

The previous prime is 20021212019987. The next prime is 20021212020037. The reversal of 20021212020022 is 22002021212002.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 20021212019978 and 20021212020005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5005303005004 + ... + 5005303005007.

It is an arithmetic number, because the mean of its divisors is an integer number (7507954507509).

Almost surely, 2^{20021212020022} is an apocalyptic number.

20021212020022 is a deficient number, since it is larger than the sum of its proper divisors (10010606010014).

20021212020022 is a wasteful number, since it uses less digits than its factorization.

20021212020022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10010606010013.

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

Adding to 20021212020022 its reverse (22002021212002), we get a palindrome (42023233232024).

The spelling of 20021212020022 in words is "twenty trillion, twenty-one billion, two hundred twelve million, twenty thousand, twenty-two".