21212011002003 has 32 divisors (see below), whose sum is σ = 30256753789440. Its totient is φ = 13172203430400.

The previous prime is 21212011002001. The next prime is 21212011002109. The reversal of 21212011002003 is 30020011021212.

It is not a de Polignac number, because 21212011002003 - 2¹ = 21212011002001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21212011002001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3048225 + ... + 7191362.

It is an arithmetic number, because the mean of its divisors is an integer number (945523555920).

Almost surely, 2^{21212011002003} is an apocalyptic number.

21212011002003 is a deficient number, since it is larger than the sum of its proper divisors (9044742787437).

21212011002003 is a wasteful number, since it uses less digits than its factorization.

21212011002003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10240027.

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

Adding to 21212011002003 its reverse (30020011021212), we get a palindrome (51232022023215).

The spelling of 21212011002003 in words is "twenty-one trillion, two hundred twelve billion, eleven million, two thousand, three".