20011001211033 has 12 divisors (see below), whose sum is σ = 31037471266320. Its totient is φ = 11434857834792.

The previous prime is 20011001211017. The next prime is 20011001211059. The reversal of 20011001211033 is 33011210011002.

It is a happy number.

It is not a de Polignac number, because 20011001211033 - 2⁴ = 20011001211017 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20011001211133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68064629823 + ... + 68064630116.

It is an arithmetic number, because the mean of its divisors is an integer number (2586455938860).

Almost surely, 2^{20011001211033} is an apocalyptic number.

It is an amenable number.

20011001211033 is a deficient number, since it is larger than the sum of its proper divisors (11026470055287).

20011001211033 is a wasteful number, since it uses less digits than its factorization.

20011001211033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136129259956 (or 136129259949 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 20011001211033 its reverse (33011210011002), we get a palindrome (53022211222035).

The spelling of 20011001211033 in words is "twenty trillion, eleven billion, one million, two hundred eleven thousand, thirty-three".