106009636921 has 2 divisors, whose sum is σ = 106009636922. Its totient is φ = 106009636920.

The previous prime is 106009636897. The next prime is 106009637003. The reversal of 106009636921 is 129636900601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106008196921 + 1440000 = 325589^2 + 1200^2 .

It is a cyclic number.

It is not a de Polignac number, because 106009636921 - 2²³ = 106001248313 is a prime.

It is a super-2 number, since 2×106009636921² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106009636721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53004818460 + 53004818461.

It is an arithmetic number, because the mean of its divisors is an integer number (53004818461).

Almost surely, 2^106009636921 is an apocalyptic number.

It is an amenable number.

106009636921 is a deficient number, since it is larger than the sum of its proper divisors (1).

106009636921 is an equidigital number, since it uses as much as digits as its factorization.

106009636921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 43.

The spelling of 106009636921 in words is "one hundred six billion, nine million, six hundred thirty-six thousand, nine hundred twenty-one".