10202220002021 has 16 divisors (see below), whose sum is σ = 10251562791600. Its totient is φ = 10152968601600.

The previous prime is 10202220001999. The next prime is 10202220002027. The reversal of 10202220002021 is 12020002220201.

It can be written as a sum of positive squares in 8 ways, for example, as 411022032100 + 9791197969921 = 641110^2 + 3129089^2 .

It is a cyclic number.

It is not a de Polignac number, because 10202220002021 - 2¹⁴ = 10202219985637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10202220001987 and 10202220002005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202220002027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1262490701 + ... + 1262498781.

It is an arithmetic number, because the mean of its divisors is an integer number (640722674475).

Almost surely, 2^{10202220002021} is an apocalyptic number.

It is an amenable number.

10202220002021 is a deficient number, since it is larger than the sum of its proper divisors (49342789579).

10202220002021 is a wasteful number, since it uses less digits than its factorization.

10202220002021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13000.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 10202220002021 its reverse (12020002220201), we get a palindrome (22222222222222).

The spelling of 10202220002021 in words is "ten trillion, two hundred two billion, two hundred twenty million, two thousand, twenty-one".