21010010011002 has 20 divisors (see below), whose sum is σ = 47077985395386. Its totient is φ = 7003336670280.

The previous prime is 21010010010973. The next prime is 21010010011033. The reversal of 21010010011002 is 20011001001012.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19746834075081 + 1263175935921 = 4443741^2 + 1123911^2 .

It is a super-2 number, since 2×21010010011002² (a number of 27 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 64845709749 + ... + 64845710072.

Almost surely, 2^{21010010011002} is an apocalyptic number.

21010010011002 is an abundant number, since it is smaller than the sum of its proper divisors (26067975384384).

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

21010010011002 is a wasteful number, since it uses less digits than its factorization.

21010010011002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129691419835 (or 129691419826 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 21010010011002 its reverse (20011001001012), we get a palindrome (41021011012014).

The spelling of 21010010011002 in words is "twenty-one trillion, ten billion, ten million, eleven thousand, two".