20122102022100 has 288 divisors, whose sum is σ = 63176862672000. Its totient is φ = 4915366225920.

The previous prime is 20122102022081. The next prime is 20122102022107. The reversal of 20122102022100 is 122020122102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20122102022100.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20122102022107) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1511910246 + ... + 1511923554.

It is an arithmetic number, because the mean of its divisors is an integer number (219364106500).

Almost surely, 2^{20122102022100} is an apocalyptic number.

20122102022100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122102022100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31588431336000).

20122102022100 is an abundant number, since it is smaller than the sum of its proper divisors (43054760649900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20122102022100 is a wasteful number, since it uses less digits than its factorization.

20122102022100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16267 (or 16260 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20122102022100 its reverse (122020122102), we get a palindrome (20244122144202).

The spelling of 20122102022100 in words is "twenty trillion, one hundred twenty-two billion, one hundred two million, twenty-two thousand, one hundred".