20012221111022 has 32 divisors (see below), whose sum is σ = 35104903282944. Its totient is φ = 8377111209600.

The previous prime is 20012221111013. The next prime is 20012221111027. The reversal of 20012221111022 is 22011112221002.

It is a super-2 number, since 2×20012221111022² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012221111027) 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, 77101622 + ... + 77360742.

It is an arithmetic number, because the mean of its divisors is an integer number (1097028227592).

Almost surely, 2^{20012221111022} is an apocalyptic number.

20012221111022 is a deficient number, since it is larger than the sum of its proper divisors (15092682171922).

20012221111022 is a wasteful number, since it uses less digits than its factorization.

20012221111022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387464.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20012221111022 its reverse (22011112221002), we get a palindrome (42023333332024).

The spelling of 20012221111022 in words is "twenty trillion, twelve billion, two hundred twenty-one million, one hundred eleven thousand, twenty-two".