21070119 has 16 divisors (see below), whose sum is σ = 32410368. Its totient is φ = 11926272.

The previous prime is 21070117. The next prime is 21070121. The reversal of 21070119 is 91107012.

It is an interprime number because it is at equal distance from previous prime (21070117) and next prime (21070121).

It is not a de Polignac number, because 21070119 - 2¹ = 21070117 is a prime.

It is a super-2 number, since 2×21070119² = 887899829348322, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 21070095 and 21070104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21070117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2442 + ... + 6935.

It is an arithmetic number, because the mean of its divisors is an integer number (2025648).

Almost surely, 2^21070119 is an apocalyptic number.

21070119 is a deficient number, since it is larger than the sum of its proper divisors (11340249).

21070119 is a wasteful number, since it uses less digits than its factorization.

21070119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9494.

The product of its (nonzero) digits is 126, while the sum is 21.

The square root of 21070119 is about 4590.2199293716. The cubic root of 21070119 is about 276.1991447645.

The spelling of 21070119 in words is "twenty-one million, seventy thousand, one hundred nineteen".