20011001221022 has 32 divisors (see below), whose sum is σ = 35695485637632. Its totient is φ = 8235301055904.

The previous prime is 20011001221009. The next prime is 20011001221031. The reversal of 20011001221022 is 22012210011002.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 20011001220988 and 20011001221006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286869428 + ... + 286939175.

It is an arithmetic number, because the mean of its divisors is an integer number (1115483926176).

Almost surely, 2^{20011001221022} is an apocalyptic number.

20011001221022 is a deficient number, since it is larger than the sum of its proper divisors (15684484416610).

20011001221022 is a wasteful number, since it uses less digits than its factorization.

20011001221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573808712.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20011001221022 its reverse (22012210011002), we get a palindrome (42023211232024).

The spelling of 20011001221022 in words is "twenty trillion, eleven billion, one million, two hundred twenty-one thousand, twenty-two".