20021121111022 has 16 divisors (see below), whose sum is σ = 30459780235872. Its totient is φ = 9867908413440.

The previous prime is 20021121110923. The next prime is 20021121111029. The reversal of 20021121111022 is 22011112112002.

It is a super-4 number, since 4×20021121111022⁴ (a number of 54 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021121110987 and 20021121111005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021121111029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10996923 + ... + 12687574.

It is an arithmetic number, because the mean of its divisors is an integer number (1903736264742).

Almost surely, 2^{20021121111022} is an apocalyptic number.

20021121111022 is a deficient number, since it is larger than the sum of its proper divisors (10438659124850).

20021121111022 is a wasteful number, since it uses less digits than its factorization.

20021121111022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23690523.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 20021121111022 its reverse (22011112112002), we get a palindrome (42032233223024).

The spelling of 20021121111022 in words is "twenty trillion, twenty-one billion, one hundred twenty-one million, one hundred eleven thousand, twenty-two".