10021120002 has 12 divisors (see below), whose sum is σ = 21712426710. Its totient is φ = 3340373328.

The previous prime is 10021119991. The next prime is 10021120003. The reversal of 10021120002 is 20002112001.

It can be written as a sum of positive squares in only one way, i.e., 8951241321 + 1069878681 = 94611^2 + 32709^2 .

It is a super-3 number, since 3×10021120002³ (a number of 31 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (10021120003) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 278364427 + ... + 278364462.

Almost surely, 2^10021120002 is an apocalyptic number.

10021120002 is an abundant number, since it is smaller than the sum of its proper divisors (11691306708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10021120002 is a wasteful number, since it uses less digits than its factorization.

10021120002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556728897 (or 556728894 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 10021120002 its reverse (20002112001), we get a palindrome (30023232003).

The spelling of 10021120002 in words is "ten billion, twenty-one million, one hundred twenty thousand, two".