20011001201010 has 64 divisors (see below), whose sum is σ = 53445919426560. Its totient is φ = 5327942031360.

The previous prime is 20011001200997. The next prime is 20011001201033. The reversal of 20011001201010 is 1010210011002.

It is a happy number.

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 = 20011001200983 and 20011001201001.

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, 57638802 + ... + 57984941.

It is an arithmetic number, because the mean of its divisors is an integer number (835092491040).

Almost surely, 2^{20011001201010} is an apocalyptic number.

20011001201010 is an abundant number, since it is smaller than the sum of its proper divisors (33434918225550).

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

20011001201010 is a wasteful number, since it uses less digits than its factorization.

20011001201010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115624400 (or 115624394 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 20011001201010 its reverse (1010210011002), we get a palindrome (21021211212012).

The spelling of 20011001201010 in words is "twenty trillion, eleven billion, one million, two hundred one thousand, ten".