20001022001010 has 32 divisors (see below), whose sum is σ = 53336058670080. Its totient is φ = 5333605866864.

The previous prime is 20001022000937. The next prime is 20001022001017. The reversal of 20001022001010 is 1010022010002.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 20001022000983 and 20001022001001.

It is not an unprimeable number, because it can be changed into a prime (20001022001017) 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, 37038929362 + ... + 37038929901.

It is an arithmetic number, because the mean of its divisors is an integer number (1666751833440).

Almost surely, 2^{20001022001010} is an apocalyptic number.

20001022001010 is an abundant number, since it is smaller than the sum of its proper divisors (33335036669070).

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

20001022001010 is a wasteful number, since it uses less digits than its factorization.

20001022001010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74077859279 (or 74077859273 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 20001022001010 its reverse (1010022010002), we get a palindrome (21011044011012).

The spelling of 20001022001010 in words is "twenty trillion, one billion, twenty-two million, one thousand, ten".