21133031979229 has 2 divisors, whose sum is σ = 21133031979230. Its totient is φ = 21133031979228.

The previous prime is 21133031979167. The next prime is 21133031979263. The reversal of 21133031979229 is 92297913033112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14087335956100 + 7045696023129 = 3753310^2 + 2654373^2 .

It is a cyclic number.

It is not a de Polignac number, because 21133031979229 - 2¹¹ = 21133031977181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21133031979929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10566515989614 + 10566515989615.

It is an arithmetic number, because the mean of its divisors is an integer number (10566515989615).

Almost surely, 2^{21133031979229} is an apocalyptic number.

It is an amenable number.

21133031979229 is a deficient number, since it is larger than the sum of its proper divisors (1).

21133031979229 is an equidigital number, since it uses as much as digits as its factorization.

21133031979229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1102248, while the sum is 52.

The spelling of 21133031979229 in words is "twenty-one trillion, one hundred thirty-three billion, thirty-one million, nine hundred seventy-nine thousand, two hundred twenty-nine".