21101002119 has 10 divisors (see below), whose sum is σ = 31521250200. Its totient is φ = 14067334692.

The previous prime is 21101002099. The next prime is 21101002129. The reversal of 21101002119 is 91120010112.

It is a happy number.

It is not a de Polignac number, because 21101002119 - 2¹⁶ = 21100936583 is a prime.

It is a super-2 number, since 2×21101002119² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101002129) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 130253019 + ... + 130253180.

It is an arithmetic number, because the mean of its divisors is an integer number (3152125020).

Almost surely, 2^21101002119 is an apocalyptic number.

21101002119 is a deficient number, since it is larger than the sum of its proper divisors (10420248081).

21101002119 is an equidigital number, since it uses as much as digits as its factorization.

21101002119 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260506211 (or 260506202 counting only the distinct ones).

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

The spelling of 21101002119 in words is "twenty-one billion, one hundred one million, two thousand, one hundred nineteen".