20021212011011 has 8 divisors (see below), whose sum is σ = 20512806098400. Its totient is φ = 19529773725760.

The previous prime is 20021212010959. The next prime is 20021212011041. The reversal of 20021212011011 is 11011021212002.

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 20021212011011 - 2¹⁴ = 20021211994627 is a prime.

It is a super-2 number, since 2×20021212011011² (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 (20021212011041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38690351 + ... + 39204408.

It is an arithmetic number, because the mean of its divisors is an integer number (2564100762300).

Almost surely, 2^{20021212011011} is an apocalyptic number.

20021212011011 is a deficient number, since it is larger than the sum of its proper divisors (491594087389).

20021212011011 is an equidigital number, since it uses as much as digits as its factorization.

20021212011011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77901069.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 20021212011011 its reverse (11011021212002), we get a palindrome (31032233223013).

The spelling of 20021212011011 in words is "twenty trillion, twenty-one billion, two hundred twelve million, eleven thousand, eleven".