21011003312210 has 32 divisors (see below), whose sum is σ = 39811473293760. Its totient is φ = 7961834167488.

The previous prime is 21011003312137. The next prime is 21011003312231. The reversal of 21011003312210 is 1221330011012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5061524 + ... + 8224416.

It is an arithmetic number, because the mean of its divisors is an integer number (1244108540430).

Almost surely, 2^{21011003312210} is an apocalyptic number.

21011003312210 is a deficient number, since it is larger than the sum of its proper divisors (18800469981550).

21011003312210 is a wasteful number, since it uses less digits than its factorization.

21011003312210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3197882.

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 21011003312210 its reverse (1221330011012), we get a palindrome (22232333323222).

The spelling of 21011003312210 in words is "twenty-one trillion, eleven billion, three million, three hundred twelve thousand, two hundred ten".