20111001221202 has 128 divisors (see below), whose sum is σ = 42182259425280. Its totient is φ = 6385567368960.

The previous prime is 20111001221153. The next prime is 20111001221203. The reversal of 20111001221202 is 20212210011102.

It is not an unprimeable number, because it can be changed into a prime (20111001221203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 8990164828 + ... + 8990167064.

It is an arithmetic number, because the mean of its divisors is an integer number (329548901760).

Almost surely, 2^{20111001221202} is an apocalyptic number.

20111001221202 is an abundant number, since it is smaller than the sum of its proper divisors (22071258204078).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20111001221202 is a wasteful number, since it uses less digits than its factorization.

20111001221202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4856.

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

Adding to 20111001221202 its reverse (20212210011102), we get a palindrome (40323211232304).

The spelling of 20111001221202 in words is "twenty trillion, one hundred eleven billion, one million, two hundred twenty-one thousand, two hundred two".