21110102021001 has 32 divisors (see below), whose sum is σ = 33330217374720. Its totient is φ = 11634714696384.

The previous prime is 21110102020991. The next prime is 21110102021017. The reversal of 21110102021001 is 10012020101112.

It is not a de Polignac number, because 21110102021001 - 2⁷ = 21110102020873 is a prime.

It is a super-3 number, since 3×21110102021001³ (a number of 41 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21110102021501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 160670335 + ... + 160801668.

It is an arithmetic number, because the mean of its divisors is an integer number (1041569292960).

Almost surely, 2^{21110102021001} is an apocalyptic number.

21110102021001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

21110102021001 is a deficient number, since it is larger than the sum of its proper divisors (12220115353719).

21110102021001 is a wasteful number, since it uses less digits than its factorization.

21110102021001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321472125.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21110102021001 its reverse (10012020101112), we get a palindrome (31122122122113).

The spelling of 21110102021001 in words is "twenty-one trillion, one hundred ten billion, one hundred two million, twenty-one thousand, one".