20021220102011 has 8 divisors (see below), whose sum is σ = 20027903899824. Its totient is φ = 20014536929920.

The previous prime is 20021220101989. The next prime is 20021220102041. The reversal of 20021220102011 is 11020102212002.

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 20021220102011 - 2⁶ = 20021220101947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20021220102041) 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, 68880095 + ... + 69170151.

It is an arithmetic number, because the mean of its divisors is an integer number (2503487987478).

Almost surely, 2^{20021220102011} is an apocalyptic number.

20021220102011 is a deficient number, since it is larger than the sum of its proper divisors (6683797813).

20021220102011 is a wasteful number, since it uses less digits than its factorization.

20021220102011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312861.

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

Adding to 20021220102011 its reverse (11020102212002), we get a palindrome (31041322314013).

The spelling of 20021220102011 in words is "twenty trillion, twenty-one billion, two hundred twenty million, one hundred two thousand, eleven".