20012221010010 has 64 divisors (see below), whose sum is σ = 48550889376000. Its totient is φ = 5278804756992.

The previous prime is 20012221009997. The next prime is 20012221010021. The reversal of 20012221010010 is 1001012221002.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3149739 + ... + 7067198.

It is an arithmetic number, because the mean of its divisors is an integer number (758607646500).

Almost surely, 2^{20012221010010} is an apocalyptic number.

20012221010010 is an abundant number, since it is smaller than the sum of its proper divisors (28538668365990).

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

20012221010010 is a wasteful number, since it uses less digits than its factorization.

20012221010010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10217655.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20012221010010 its reverse (1001012221002), we get a palindrome (21013233231012).

The spelling of 20012221010010 in words is "twenty trillion, twelve billion, two hundred twenty-one million, ten thousand, ten".