10202122021 has 8 divisors (see below), whose sum is σ = 12556457984. Its totient is φ = 8072008560.

The previous prime is 10202121967. The next prime is 10202122037. The reversal of 10202122021 is 12022120201.

It is a happy number.

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

It is not a de Polignac number, because 10202122021 - 2⁹ = 10202121509 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is a junction number, because it is equal to n+sod(n) for n = 10202121992 and 10202122010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10202122321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56055525 + ... + 56055706.

It is an arithmetic number, because the mean of its divisors is an integer number (1569557248).

Almost surely, 2^10202122021 is an apocalyptic number.

It is an amenable number.

10202122021 is a deficient number, since it is larger than the sum of its proper divisors (2354335963).

10202122021 is a wasteful number, since it uses less digits than its factorization.

10202122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112111251.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 10202122021 its reverse (12022120201), we get a palindrome (22224242222).

The spelling of 10202122021 in words is "ten billion, two hundred two million, one hundred twenty-two thousand, twenty-one".