20001122010 has 48 divisors (see below), whose sum is σ = 52321991904. Its totient is φ = 5300906976.

The previous prime is 20001121997. The next prime is 20001122041. The reversal of 20001122010 is 1022110002.

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 = 20001121983 and 20001122001.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 667032 + ... + 696371.

It is an arithmetic number, because the mean of its divisors is an integer number (1090041498).

Almost surely, 2^20001122010 is an apocalyptic number.

20001122010 is an abundant number, since it is smaller than the sum of its proper divisors (32320869894).

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

20001122010 is a wasteful number, since it uses less digits than its factorization.

20001122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1363579 (or 1363576 counting only the distinct ones).

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

Adding to 20001122010 its reverse (1022110002), we get a palindrome (21023232012).

The spelling of 20001122010 in words is "twenty billion, one million, one hundred twenty-two thousand, ten".