20021201120011 has 32 divisors (see below), whose sum is σ = 25939165091840. Its totient is φ = 15006772416384.

The previous prime is 20021201119987. The next prime is 20021201120021. The reversal of 20021201120011 is 11002110212002.

It is not a de Polignac number, because 20021201120011 - 2¹³ = 20021201111819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 20021201119973 and 20021201120000.

It is not an unprimeable number, because it can be changed into a prime (20021201120021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65641486 + ... + 65945788.

It is an arithmetic number, because the mean of its divisors is an integer number (810598909120).

Almost surely, 2^{20021201120011} is an apocalyptic number.

20021201120011 is a deficient number, since it is larger than the sum of its proper divisors (5917963971829).

20021201120011 is a wasteful number, since it uses less digits than its factorization.

20021201120011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342395.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 20021201120011 its reverse (11002110212002), we get a palindrome (31023311332013).

The spelling of 20021201120011 in words is "twenty trillion, twenty-one billion, two hundred one million, one hundred twenty thousand, eleven".