21030333113212 has 12 divisors (see below), whose sum is σ = 36804165025320. Its totient is φ = 10514857391696.

The previous prime is 21030333113201. The next prime is 21030333113249. The reversal of 21030333113212 is 21231133303012.

It is a super-2 number, since 2×21030333113212² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77138143 + ... + 77410294.

It is an arithmetic number, because the mean of its divisors is an integer number (3067013752110).

Almost surely, 2^{21030333113212} is an apocalyptic number.

It is an amenable number.

21030333113212 is a deficient number, since it is larger than the sum of its proper divisors (15773831912108).

21030333113212 is a wasteful number, since it uses less digits than its factorization.

21030333113212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154582460 (or 154582458 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 25.

Adding to 21030333113212 its reverse (21231133303012), we get a palindrome (42261466416224).

The spelling of 21030333113212 in words is "twenty-one trillion, thirty billion, three hundred thirty-three million, one hundred thirteen thousand, two hundred twelve".