20012221201101 has 16 divisors (see below), whose sum is σ = 27412662984000. Its totient is φ = 12976854853248.

The previous prime is 20012221201097. The next prime is 20012221201171. The reversal of 20012221201101 is 10110212221002.

It is not a de Polignac number, because 20012221201101 - 2² = 20012221201097 is a prime.

It is a super-2 number, since 2×20012221201101² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012221201171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27735151 + ... + 28447548.

It is an arithmetic number, because the mean of its divisors is an integer number (1713291436500).

Almost surely, 2^{20012221201101} is an apocalyptic number.

It is an amenable number.

20012221201101 is a deficient number, since it is larger than the sum of its proper divisors (7400441782899).

20012221201101 is a wasteful number, since it uses less digits than its factorization.

20012221201101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56185948.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20012221201101 its reverse (10110212221002), we get a palindrome (30122433422103).

The spelling of 20012221201101 in words is "twenty trillion, twelve billion, two hundred twenty-one million, two hundred one thousand, one hundred one".