21042222029 has 8 divisors (see below), whose sum is σ = 21639312000. Its totient is φ = 20453146912.

The previous prime is 21042222017. The next prime is 21042222031. The reversal of 21042222029 is 92022224012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21042222029 - 2²⁰ = 21041173453 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21042221989 and 21042222007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21042221029) 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, 1998389 + ... + 2008890.

It is an arithmetic number, because the mean of its divisors is an integer number (2704914000).

Almost surely, 2^21042222029 is an apocalyptic number.

It is an amenable number.

21042222029 is a deficient number, since it is larger than the sum of its proper divisors (597089971).

21042222029 is an equidigital number, since it uses as much as digits as its factorization.

21042222029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4007427.

The product of its (nonzero) digits is 2304, while the sum is 26.

The spelling of 21042222029 in words is "twenty-one billion, forty-two million, two hundred twenty-two thousand, twenty-nine".