210101021019 has 16 divisors (see below), whose sum is σ = 311910604800. Its totient is φ = 139774922568.

The previous prime is 210101021003. The next prime is 210101021033. The reversal of 210101021019 is 910120101012.

It is a happy number.

It is not a de Polignac number, because 210101021019 - 2⁴ = 210101021003 is a prime.

It is a super-2 number, since 2×210101021019² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210101020992 and 210101021010.

It is not an unprimeable number, because it can be changed into a prime (210101021419) 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, 8109739 + ... + 8135604.

It is an arithmetic number, because the mean of its divisors is an integer number (19494412800).

Almost surely, 2^210101021019 is an apocalyptic number.

210101021019 is a deficient number, since it is larger than the sum of its proper divisors (101809583781).

210101021019 is a wasteful number, since it uses less digits than its factorization.

210101021019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16245831 (or 16245825 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

The spelling of 210101021019 in words is "two hundred ten billion, one hundred one million, twenty-one thousand, nineteen".