106921075081 has 4 divisors (see below), whose sum is σ = 106926004432. Its totient is φ = 106916145732.

The previous prime is 106921075073. The next prime is 106921075087. The reversal of 106921075081 is 180570129601.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 106921075081 - 2³ = 106921075073 is a prime.

It is a super-2 number, since 2×106921075081² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106921075087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2431995 + ... + 2475568.

It is an arithmetic number, because the mean of its divisors is an integer number (26731501108).

Almost surely, 2^106921075081 is an apocalyptic number.

It is an amenable number.

106921075081 is a deficient number, since it is larger than the sum of its proper divisors (4929351).

106921075081 is an equidigital number, since it uses as much as digits as its factorization.

106921075081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4929350.

The product of its (nonzero) digits is 30240, while the sum is 40.

The spelling of 106921075081 in words is "one hundred six billion, nine hundred twenty-one million, seventy-five thousand, eighty-one".