21101210220019 has 8 divisors (see below), whose sum is σ = 21137319000000. Its totient is φ = 21065107956072.

The previous prime is 21101210219927. The next prime is 21101210220061. The reversal of 21101210220019 is 91002201210112.

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 21101210220019 - 2³⁷ = 20963771266547 is a prime.

It is a super-2 number, since 2×21101210220019² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21101210220919) 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, 4875432 + ... + 8122330.

It is an arithmetic number, because the mean of its divisors is an integer number (2642164875000).

Almost surely, 2^{21101210220019} is an apocalyptic number.

21101210220019 is a deficient number, since it is larger than the sum of its proper divisors (36108779981).

21101210220019 is a wasteful number, since it uses less digits than its factorization.

21101210220019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3258017.

The product of its (nonzero) digits is 144, while the sum is 22.

The spelling of 21101210220019 in words is "twenty-one trillion, one hundred one billion, two hundred ten million, two hundred twenty thousand, nineteen".