20122121202011 has 8 divisors (see below), whose sum is σ = 20463272481600. Its totient is φ = 19780973201800.

The previous prime is 20122121201993. The next prime is 20122121202013. The reversal of 20122121202011 is 11020212122102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20122121202011 - 2²⁶ = 20122054093147 is a prime.

It is a super-2 number, since 2×20122121202011² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20122121202013) 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 7 ways as a sum of consecutive naturals, for example, 13725020 + ... + 15120198.

It is an arithmetic number, because the mean of its divisors is an integer number (2557909060200).

Almost surely, 2^{20122121202011} is an apocalyptic number.

20122121202011 is a deficient number, since it is larger than the sum of its proper divisors (341151279589).

20122121202011 is a wasteful number, since it uses less digits than its factorization.

20122121202011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1639689.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20122121202011 its reverse (11020212122102), we get a palindrome (31142333324113).

The spelling of 20122121202011 in words is "twenty trillion, one hundred twenty-two billion, one hundred twenty-one million, two hundred two thousand, eleven".