20001211002 has 24 divisors (see below), whose sum is σ = 43553733600. Its totient is φ = 6633566280.

The previous prime is 20001210997. The next prime is 20001211019. The reversal of 20001211002 is 20011210002.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2788324 + ... + 2795487.

It is an arithmetic number, because the mean of its divisors is an integer number (1814738900).

Almost surely, 2^20001211002 is an apocalyptic number.

20001211002 is an abundant number, since it is smaller than the sum of its proper divisors (23552522598).

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

20001211002 is a wasteful number, since it uses less digits than its factorization.

20001211002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5584018 (or 5584015 counting only the distinct ones).

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

Adding to 20001211002 its reverse (20011210002), we get a palindrome (40012421004).

The spelling of 20001211002 in words is "twenty billion, one million, two hundred eleven thousand, two".