20000001211011 has 16 divisors (see below), whose sum is σ = 29646650236320. Its totient is φ = 13325675675040.

The previous prime is 20000001210991. The next prime is 20000001211051. The reversal of 20000001211011 is 11011210000002.

It is a happy number.

It is not a de Polignac number, because 20000001211011 - 2⁶ = 20000001210947 is a prime.

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 = 20000001210984 and 20000001211002.

It is not an unprimeable number, because it can be changed into a prime (20000001211051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212687280 + ... + 212781293.

It is an arithmetic number, because the mean of its divisors is an integer number (1852915639770).

Almost surely, 2^{20000001211011} is an apocalyptic number.

20000001211011 is a deficient number, since it is larger than the sum of its proper divisors (9646649025309).

20000001211011 is a wasteful number, since it uses less digits than its factorization.

20000001211011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425470323 (or 425470317 counting only the distinct ones).

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

Adding to 20000001211011 its reverse (11011210000002), we get a palindrome (31011211211013).

The spelling of 20000001211011 in words is "twenty trillion, one million, two hundred eleven thousand, eleven".