106212149 has 2 divisors, whose sum is σ = 106212150. Its totient is φ = 106212148.

The previous prime is 106212143. The next prime is 106212157. The reversal of 106212149 is 941212601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88021924 + 18190225 = 9382^2 + 4265^2 .

It is a cyclic number.

It is not a de Polignac number, because 106212149 - 2⁴ = 106212133 is a prime.

It is a super-2 number, since 2×106212149² = 22562041190396402, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106212143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53106074 + 53106075.

It is an arithmetic number, because the mean of its divisors is an integer number (53106075).

Almost surely, 2^106212149 is an apocalyptic number.

It is an amenable number.

106212149 is a deficient number, since it is larger than the sum of its proper divisors (1).

106212149 is an equidigital number, since it uses as much as digits as its factorization.

106212149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 106212149 is about 10305.9278573062. The cubic root of 106212149 is about 473.5778686971.

The spelling of 106212149 in words is "one hundred six million, two hundred twelve thousand, one hundred forty-nine".