10021322121 has 8 divisors (see below), whose sum is σ = 13366709664. Its totient is φ = 6678408000.

The previous prime is 10021322083. The next prime is 10021322137. The reversal of 10021322121 is 12122312001.

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

It is a de Polignac number, because none of the positive numbers 2^k-10021322121 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10021322121.

It is not an unprimeable number, because it can be changed into a prime (10021322921) 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, 608880 + ... + 625121.

It is an arithmetic number, because the mean of its divisors is an integer number (1670838708).

Almost surely, 2^10021322121 is an apocalyptic number.

It is an amenable number.

10021322121 is a deficient number, since it is larger than the sum of its proper divisors (3345387543).

10021322121 is a wasteful number, since it uses less digits than its factorization.

10021322121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236711.

The product of its (nonzero) digits is 48, while the sum is 15.

Adding to 10021322121 its reverse (12122312001), we get a palindrome (22143634122).

The spelling of 10021322121 in words is "ten billion, twenty-one million, three hundred twenty-two thousand, one hundred twenty-one".