21033211020312 has 32 divisors (see below), whose sum is σ = 52590636564480. Its totient is φ = 7010055804960.

The previous prime is 21033211020271. The next prime is 21033211020361. The reversal of 21033211020312 is 21302011233012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63239128 + ... + 63570855.

It is an arithmetic number, because the mean of its divisors is an integer number (1643457392640).

Almost surely, 2^{21033211020312} is an apocalyptic number.

It is an amenable number.

21033211020312 is an abundant number, since it is smaller than the sum of its proper divisors (31557425544168).

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

21033211020312 is a wasteful number, since it uses less digits than its factorization.

21033211020312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126816903 (or 126816899 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 21033211020312 its reverse (21302011233012), we get a palindrome (42335222253324).

The spelling of 21033211020312 in words is "twenty-one trillion, thirty-three billion, two hundred eleven million, twenty thousand, three hundred twelve".