20112201012021 has 16 divisors (see below), whose sum is σ = 26897500459200. Its totient is φ = 13367530344960.

The previous prime is 20112201011921. The next prime is 20112201012061. The reversal of 20112201012021 is 12021010221102.

It is not a de Polignac number, because 20112201012021 - 2⁹ = 20112201011509 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20112201012061) 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, 4852581 + ... + 7985733.

It is an arithmetic number, because the mean of its divisors is an integer number (1681093778700).

Almost surely, 2^{20112201012021} is an apocalyptic number.

It is an amenable number.

20112201012021 is a deficient number, since it is larger than the sum of its proper divisors (6785299447179).

20112201012021 is a wasteful number, since it uses less digits than its factorization.

20112201012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3139636.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20112201012021 its reverse (12021010221102), we get a palindrome (32133211233123).

The spelling of 20112201012021 in words is "twenty trillion, one hundred twelve billion, two hundred one million, twelve thousand, twenty-one".