21202001101019 has 16 divisors (see below), whose sum is σ = 21768063482880. Its totient is φ = 20642104186080.

The previous prime is 21202001101003. The next prime is 21202001101027. The reversal of 21202001101019 is 91010110020212.

It is a cyclic number.

It is not a de Polignac number, because 21202001101019 - 2⁴ = 21202001101003 is a prime.

It is a super-2 number, since 2×21202001101019² (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 (21202001601019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156976214 + ... + 157111220.

It is an arithmetic number, because the mean of its divisors is an integer number (1360503967680).

Almost surely, 2^{21202001101019} is an apocalyptic number.

21202001101019 is a deficient number, since it is larger than the sum of its proper divisors (566062381861).

21202001101019 is a wasteful number, since it uses less digits than its factorization.

21202001101019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157810.

The product of its (nonzero) digits is 72, while the sum is 20.

The spelling of 21202001101019 in words is "twenty-one trillion, two hundred two billion, one million, one hundred one thousand, nineteen".