20012211022104 has 192 divisors, whose sum is σ = 63737190316800. Its totient is φ = 5553601982208.

The previous prime is 20012211022103. The next prime is 20012211022201. The reversal of 20012211022104 is 40122011221002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012211022103) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1299922 + ... + 6458654.

It is an arithmetic number, because the mean of its divisors is an integer number (331964532900).

Almost surely, 2^{20012211022104} is an apocalyptic number.

20012211022104 is a gapful number since it is divisible by the number (24) 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 20012211022104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31868595158400).

20012211022104 is an abundant number, since it is smaller than the sum of its proper divisors (43724979294696).

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

20012211022104 is a wasteful number, since it uses less digits than its factorization.

20012211022104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5158974 (or 5158967 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20012211022104 its reverse (40122011221002), we get a palindrome (60134222243106).

The spelling of 20012211022104 in words is "twenty trillion, twelve billion, two hundred eleven million, twenty-two thousand, one hundred four".