20012202021111 has 32 divisors (see below), whose sum is σ = 28328694796800. Its totient is φ = 12522863548416.

The previous prime is 20012202021107. The next prime is 20012202021139. The reversal of 20012202021111 is 11112020221002.

It is not a de Polignac number, because 20012202021111 - 2² = 20012202021107 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012202021151) 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, 29511120 + ... + 30181626.

It is an arithmetic number, because the mean of its divisors is an integer number (885271712400).

Almost surely, 2^{20012202021111} is an apocalyptic number.

20012202021111 is a deficient number, since it is larger than the sum of its proper divisors (8316492775689).

20012202021111 is a wasteful number, since it uses less digits than its factorization.

20012202021111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672103.

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

Adding to 20012202021111 its reverse (11112020221002), we get a palindrome (31124222242113).

The spelling of 20012202021111 in words is "twenty trillion, twelve billion, two hundred two million, twenty-one thousand, one hundred eleven".