106071021 has 12 divisors (see below), whose sum is σ = 175101472. Its totient is φ = 60611976.

The previous prime is 106071011. The next prime is 106071023. The reversal of 106071021 is 120170601.

It is not a de Polignac number, because 106071021 - 2⁵ = 106070989 is a prime.

It is a super-2 number, since 2×106071021² = 22502122991964882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106070985 and 106071003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106071023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 841771 + ... + 841896.

Almost surely, 2^106071021 is an apocalyptic number.

It is an amenable number.

106071021 is a deficient number, since it is larger than the sum of its proper divisors (69030451).

106071021 is a wasteful number, since it uses less digits than its factorization.

106071021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683680 (or 1683677 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 106071021 is about 10299.0786481122. The cubic root of 106071021 is about 473.3680222654.

It can be divided in two parts, 10607 and 1021, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 106071021 in words is "one hundred six million, seventy-one thousand, twenty-one".