20122102100121 has 16 divisors (see below), whose sum is σ = 32465912632704. Its totient is φ = 10821970877184.

The previous prime is 20122102100101. The next prime is 20122102100129. The reversal of 20122102100121 is 12100120122102.

It is not a de Polignac number, because 20122102100121 - 2¹¹ = 20122102098073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20122102100121.

It is not an unprimeable number, because it can be changed into a prime (20122102100129) 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, 28182215470 + ... + 28182216183.

It is an arithmetic number, because the mean of its divisors is an integer number (2029119539544).

Almost surely, 2^{20122102100121} is an apocalyptic number.

20122102100121 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20122102100121 is a deficient number, since it is larger than the sum of its proper divisors (12343810532583).

20122102100121 is a wasteful number, since it uses less digits than its factorization.

20122102100121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56364431680.

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

Adding to 20122102100121 its reverse (12100120122102), we get a palindrome (32222222222223).

The spelling of 20122102100121 in words is "twenty trillion, one hundred twenty-two billion, one hundred two million, one hundred thousand, one hundred twenty-one".