106001056621 has 4 divisors (see below), whose sum is σ = 109656265500. Its totient is φ = 102345847744.

The previous prime is 106001056619. The next prime is 106001056687. The reversal of 106001056621 is 126650100601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 126650100601 = 1979 ⋅63997019.

It can be written as a sum of positive squares in 2 ways, for example, as 90893205225 + 15107851396 = 301485^2 + 122914^2 .

It is a cyclic number.

It is not a de Polignac number, because 106001056621 - 2¹ = 106001056619 is a prime.

It is a super-2 number, since 2×106001056621² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106001056621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106001056691) 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, 1827604396 + ... + 1827604453.

It is an arithmetic number, because the mean of its divisors is an integer number (27414066375).

Almost surely, 2^106001056621 is an apocalyptic number.

It is an amenable number.

106001056621 is a deficient number, since it is larger than the sum of its proper divisors (3655208879).

106001056621 is an equidigital number, since it uses as much as digits as its factorization.

106001056621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3655208878.

The product of its (nonzero) digits is 2160, while the sum is 28.

The spelling of 106001056621 in words is "one hundred six billion, one million, fifty-six thousand, six hundred twenty-one".