20012220010002 has 128 divisors (see below), whose sum is σ = 46212283772928. Its totient is φ = 5717811052800.

The previous prime is 20012220009919. The next prime is 20012220010009. The reversal of 20012220010002 is 20001002221002.

It is a self number, because there is not a number n which added to its sum of digits gives 20012220010002.

It is not an unprimeable number, because it can be changed into a prime (20012220010009) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 650640408 + ... + 650671164.

It is an arithmetic number, because the mean of its divisors is an integer number (361033466976).

Almost surely, 2^{20012220010002} is an apocalyptic number.

20012220010002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20012220010002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23106141886464).

20012220010002 is an abundant number, since it is smaller than the sum of its proper divisors (26200063762926).

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

20012220010002 is a wasteful number, since it uses less digits than its factorization.

20012220010002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36904.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20012220010002 its reverse (20001002221002), we get a palindrome (40013222231004).

The spelling of 20012220010002 in words is "twenty trillion, twelve billion, two hundred twenty million, ten thousand, two".