21133311211002 has 16 divisors (see below), whose sum is σ = 42289807645440. Its totient is φ = 7040572866432.

The previous prime is 21133311210931. The next prime is 21133311211009. The reversal of 21133311211002 is 20011211333112.

It is a self number, because there is not a number n which added to its sum of digits gives 21133311211002.

It is not an unprimeable number, because it can be changed into a prime (21133311211009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 966039127 + ... + 966061002.

It is an arithmetic number, because the mean of its divisors is an integer number (2643112977840).

Almost surely, 2^{21133311211002} is an apocalyptic number.

21133311211002 is an abundant number, since it is smaller than the sum of its proper divisors (21156496434438).

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

21133311211002 is a wasteful number, since it uses less digits than its factorization.

21133311211002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1932101957.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 21133311211002 its reverse (20011211333112), we get a palindrome (41144522544114).

The spelling of 21133311211002 in words is "twenty-one trillion, one hundred thirty-three billion, three hundred eleven million, two hundred eleven thousand, two".