21429182229 has 32 divisors (see below), whose sum is σ = 35829368064. Its totient is φ = 11090027520.

The previous prime is 21429182213. The next prime is 21429182237. The reversal of 21429182229 is 92228192412.

It is not a de Polignac number, because 21429182229 - 2⁴ = 21429182213 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21429182029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 726052 + ... + 754989.

It is an arithmetic number, because the mean of its divisors is an integer number (1119667752).

Almost surely, 2^21429182229 is an apocalyptic number.

It is an amenable number.

21429182229 is a deficient number, since it is larger than the sum of its proper divisors (14400185835).

21429182229 is a wasteful number, since it uses less digits than its factorization.

21429182229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481117.

The product of its digits is 82944, while the sum is 42.

The spelling of 21429182229 in words is "twenty-one billion, four hundred twenty-nine million, one hundred eighty-two thousand, two hundred twenty-nine".