20011021001222 has 16 divisors (see below), whose sum is σ = 30354030720000. Its totient is φ = 9893012500800.

The previous prime is 20011021001129. The next prime is 20011021001263. The reversal of 20011021001222 is 22210012011002.

It is a super-2 number, since 2×20011021001222² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20011021001197 and 20011021001206.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27759404 + ... + 28471152.

It is an arithmetic number, because the mean of its divisors is an integer number (1897126920000).

Almost surely, 2^{20011021001222} is an apocalyptic number.

20011021001222 is a deficient number, since it is larger than the sum of its proper divisors (10343009718778).

20011021001222 is a wasteful number, since it uses less digits than its factorization.

20011021001222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 869791.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20011021001222 its reverse (22210012011002), we get a palindrome (42221033012224).

The spelling of 20011021001222 in words is "twenty trillion, eleven billion, twenty-one million, one thousand, two hundred twenty-two".