20001020212222 has 8 divisors (see below), whose sum is σ = 34287463220976. Its totient is φ = 8571865805232.

The previous prime is 20001020212211. The next prime is 20001020212249. The reversal of 20001020212222 is 22221202010002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20001020212196 and 20001020212205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 714322150423 + ... + 714322150450.

It is an arithmetic number, because the mean of its divisors is an integer number (4285932902622).

Almost surely, 2^{20001020212222} is an apocalyptic number.

20001020212222 is a deficient number, since it is larger than the sum of its proper divisors (14286443008754).

20001020212222 is a wasteful number, since it uses less digits than its factorization.

20001020212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428644300882.

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

Adding to 20001020212222 its reverse (22221202010002), we get a palindrome (42222222222224).

The spelling of 20001020212222 in words is "twenty trillion, one billion, twenty million, two hundred twelve thousand, two hundred twenty-two".