20010222222021 has 48 divisors (see below), whose sum is σ = 31978043225856. Its totient is φ = 11993159490048.

The previous prime is 20010222221993. The next prime is 20010222222043. The reversal of 20010222222021 is 12022222201002.

20010222222021 is a `hidden beast` number, since 200 + 1 + 0 + 2 + 222 + 220 + 21 = 666.

It is not a de Polignac number, because 20010222222021 - 2³⁴ = 19993042352837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20010222221985 and 20010222222003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010222222421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1299385 + ... + 6458238.

It is an arithmetic number, because the mean of its divisors is an integer number (666209233872).

Almost surely, 2^{20010222222021} is an apocalyptic number.

It is an amenable number.

20010222222021 is a deficient number, since it is larger than the sum of its proper divisors (11967821003835).

20010222222021 is a wasteful number, since it uses less digits than its factorization.

20010222222021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7758402 (or 7758399 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 20010222222021 its reverse (12022222201002), we get a palindrome (32032444423023).

The spelling of 20010222222021 in words is "twenty trillion, ten billion, two hundred twenty-two million, two hundred twenty-two thousand, twenty-one".