20101220000122 has 8 divisors (see below), whose sum is σ = 30167300416500. Its totient is φ = 10045453194624.

The previous prime is 20101220000023. The next prime is 20101220000131. The reversal of 20101220000122 is 22100002210102.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18588937397121 + 1512282603001 = 4311489^2 + 1229749^2 .

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

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, 2578397847 + ... + 2578405642.

Almost surely, 2^{20101220000122} is an apocalyptic number.

20101220000122 is a deficient number, since it is larger than the sum of its proper divisors (10066080416378).

20101220000122 is a wasteful number, since it uses less digits than its factorization.

20101220000122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5156805440.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20101220000122 its reverse (22100002210102), we get a palindrome (42201222210224).

The spelling of 20101220000122 in words is "twenty trillion, one hundred one billion, two hundred twenty million, one hundred twenty-two", and thus it is an aban number.