20001122022011 has 16 divisors (see below), whose sum is σ = 23201215242240. Its totient is φ = 17090180854560.

The previous prime is 20001122022001. The next prime is 20001122022031. The reversal of 20001122022011 is 11022022110002.

It is a cyclic number.

It is not a de Polignac number, because 20001122022011 - 2¹⁰ = 20001122020987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20001122022001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1078916291 + ... + 1078934828.

It is an arithmetic number, because the mean of its divisors is an integer number (1450075952640).

Almost surely, 2^{20001122022011} is an apocalyptic number.

20001122022011 is a deficient number, since it is larger than the sum of its proper divisors (3200093220229).

20001122022011 is a wasteful number, since it uses less digits than its factorization.

20001122022011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2157851186.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20001122022011 its reverse (11022022110002), we get a palindrome (31023144132013).

The spelling of 20001122022011 in words is "twenty trillion, one billion, one hundred twenty-two million, twenty-two thousand, eleven".