21003300121310 has 256 divisors, whose sum is σ = 46038129096960. Its totient is φ = 6814732124160.

The previous prime is 21003300121277. The next prime is 21003300121351. The reversal of 21003300121310 is 1312100330012.

It is a super-2 number, since 2×21003300121310² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 981589532 + ... + 981610928.

It is an arithmetic number, because the mean of its divisors is an integer number (179836441785).

Almost surely, 2^{21003300121310} is an apocalyptic number.

21003300121310 is an abundant number, since it is smaller than the sum of its proper divisors (25034828975650).

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

21003300121310 is a wasteful number, since it uses less digits than its factorization.

21003300121310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21791.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 21003300121310 its reverse (1312100330012), we get a palindrome (22315400451322).

The spelling of 21003300121310 in words is "twenty-one trillion, three billion, three hundred million, one hundred twenty-one thousand, three hundred ten".