20220210121021 has 8 divisors (see below), whose sum is σ = 20772265434584. Its totient is φ = 19668447604800.

The previous prime is 20220210121019. The next prime is 20220210121043. The reversal of 20220210121021 is 12012101202202.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1290009837796 + 18930200283225 = 1135786^2 + 4350885^2 .

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 20220210121021 - 2¹ = 20220210121019 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20220210120986 and 20220210121004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220210121081) 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, 73059330 + ... + 73335571.

It is an arithmetic number, because the mean of its divisors is an integer number (2596533179323).

Almost surely, 2^{20220210121021} is an apocalyptic number.

It is an amenable number.

20220210121021 is a deficient number, since it is larger than the sum of its proper divisors (552055313563).

20220210121021 is a wasteful number, since it uses less digits than its factorization.

20220210121021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146398671.

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

Adding to 20220210121021 its reverse (12012101202202), we get a palindrome (32232311323223).

The spelling of 20220210121021 in words is "twenty trillion, two hundred twenty billion, two hundred ten million, one hundred twenty-one thousand, twenty-one".