10220021122021 has 4 divisors (see below), whose sum is σ = 10572435643500. Its totient is φ = 9867606600544.

The previous prime is 10220021121949. The next prime is 10220021122057. The reversal of 10220021122021 is 12022112002201.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8805990965121 + 1414030156900 = 2967489^2 + 1189130^2 .

It is a cyclic number.

It is not a de Polignac number, because 10220021122021 - 2¹⁹ = 10220020597733 is a prime.

It is a super-2 number, since 2×10220021122021² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10220021121986 and 10220021122004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10220021122081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 176207260696 + ... + 176207260753.

It is an arithmetic number, because the mean of its divisors is an integer number (2643108910875).

Almost surely, 2^{10220021122021} is an apocalyptic number.

It is an amenable number.

10220021122021 is a deficient number, since it is larger than the sum of its proper divisors (352414521479).

10220021122021 is an equidigital number, since it uses as much as digits as its factorization.

10220021122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352414521478.

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

Adding to 10220021122021 its reverse (12022112002201), we get a palindrome (22242133124222).

The spelling of 10220021122021 in words is "ten trillion, two hundred twenty billion, twenty-one million, one hundred twenty-two thousand, twenty-one".