10021121002 has 8 divisors (see below), whose sum is σ = 15915898116. Its totient is φ = 4715821632.

The previous prime is 10021120997. The next prime is 10021121003. The reversal of 10021121002 is 20012112001.

It can be written as a sum of positive squares in 2 ways, for example, as 9975814641 + 45306361 = 99879^2 + 6731^2 .

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

It is a super-2 number, since 2×10021121002² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 10021121002.

It is not an unprimeable number, because it can be changed into a prime (10021121003) 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, 147369393 + ... + 147369460.

Almost surely, 2^10021121002 is an apocalyptic number.

10021121002 is a deficient number, since it is larger than the sum of its proper divisors (5894777114).

10021121002 is a wasteful number, since it uses less digits than its factorization.

10021121002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 294738872.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 10021121002 its reverse (20012112001), we get a palindrome (30033233003).

Subtracting 10021121002 from its reverse (20012112001), we obtain a palindrome (9990990999).

The spelling of 10021121002 in words is "ten billion, twenty-one million, one hundred twenty-one thousand, two".