29011000111021 has 2 divisors, whose sum is σ = 29011000111022. Its totient is φ = 29011000111020.

The previous prime is 29011000110973. The next prime is 29011000111043. The reversal of 29011000111021 is 12011100011092.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23960143908100 + 5050856202921 = 4894910^2 + 2247411^2 .

It is a cyclic number.

It is not a de Polignac number, because 29011000111021 - 2¹⁹ = 29010999586733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 29011000111021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (29011000111061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14505500055510 + 14505500055511.

It is an arithmetic number, because the mean of its divisors is an integer number (14505500055511).

Almost surely, 2^{29011000111021} is an apocalyptic number.

It is an amenable number.

29011000111021 is a deficient number, since it is larger than the sum of its proper divisors (1).

29011000111021 is an equidigital number, since it uses as much as digits as its factorization.

29011000111021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36, while the sum is 19.

The spelling of 29011000111021 in words is "twenty-nine trillion, eleven billion, one hundred eleven thousand, twenty-one".