20222120101021 has 8 divisors (see below), whose sum is σ = 20253894284664. Its totient is φ = 20190348384000.

The previous prime is 20222120101019. The next prime is 20222120101067. The reversal of 20222120101021 is 12010102122202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1210470845796 + 19011649255225 = 1100214^2 + 4360235^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20222120101021 - 2¹ = 20222120101019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20222120100986 and 20222120101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20222120101081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16150521 + ... + 17357521.

It is an arithmetic number, because the mean of its divisors is an integer number (2531736785583).

Almost surely, 2^{20222120101021} is an apocalyptic number.

It is an amenable number.

20222120101021 is a deficient number, since it is larger than the sum of its proper divisors (31774183643).

20222120101021 is a wasteful number, since it uses less digits than its factorization.

20222120101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1233311.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20222120101021 its reverse (12010102122202), we get a palindrome (32232222223223).

The spelling of 20222120101021 in words is "twenty trillion, two hundred twenty-two billion, one hundred twenty million, one hundred one thousand, twenty-one".