10222012021 has 8 divisors (see below), whose sum is σ = 11009557944. Its totient is φ = 9434642880.

The previous prime is 10222012007. The next prime is 10222012039. The reversal of 10222012021 is 12021022201.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 640343025 + 9581668996 = 25305^2 + 97886^2 .

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

It is not a de Polignac number, because 10222012021 - 2¹⁵ = 10221979253 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10222011992 and 10222012010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10222012081) 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, 91311 + ... + 169651.

It is an arithmetic number, because the mean of its divisors is an integer number (1376194743).

Almost surely, 2^10222012021 is an apocalyptic number.

It is an amenable number.

10222012021 is a deficient number, since it is larger than the sum of its proper divisors (787545923).

10222012021 is a wasteful number, since it uses less digits than its factorization.

10222012021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88391.

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

Adding to 10222012021 its reverse (12021022201), we get a palindrome (22243034222).

The spelling of 10222012021 in words is "ten billion, two hundred twenty-two million, twelve thousand, twenty-one".