20121022 has 8 divisors (see below), whose sum is σ = 30338496. Its totient is φ = 10008192.

The previous prime is 20120999. The next prime is 20121043. The reversal of 20121022 is 22012102.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25678 + ... + 26449.

It is an arithmetic number, because the mean of its divisors is an integer number (3792312).

Almost surely, 2^20121022 is an apocalyptic number.

20121022 is a deficient number, since it is larger than the sum of its proper divisors (10217474).

20121022 is a wasteful number, since it uses less digits than its factorization.

20121022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52322.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 20121022 is about 4485.6462187738. The cubic root of 20121022 is about 271.9881680984.

Adding to 20121022 its reverse (22012102), we get a palindrome (42133124).

It can be divided in two parts, 2012102 and 2, that multiplied together give a palindrome (4024204).

The spelling of 20121022 in words is "twenty million, one hundred twenty-one thousand, twenty-two".